Most home canners already own a pot. What they do not own, nine times out of ten, is the right canning jar rack to go inside it. That single wire insert is the difference between jars held clear of the pot bottom in circulating water and jars rattling directly on hot metal, which is how glass cracks and how processing times go wrong.
This guide covers process racks only, the removable wire or nylon inserts that sit inside a water bath canner, tall soup pot or pressure canner and lift Mason jars off the base. It does not cover jar storage shelves, decorative mason jar carriers or cabinet organizers, which is the mix-up that blurs this search page. If you are shopping for a shelf that holds jars on a counter, stop here and keep looking. If you are shopping for the thing that goes in the pot, keep reading.
We compared ten racks for this guide in 2026 on the only things that actually matter in a canning pot: interior diameter, wire gauge, jar capacity, whether the handles can lift a full load of boiling-hot glass, and whether the finish survives a season of hard water. Every measurement below comes from the manufacturer listing, and every verdict is cross-checked against what buyers report after real batches. We also pulled in what long-time canners say on r/Canning and Houzz, where the same fit problem comes up over and over.
Before anything else, one clarification that matters more than any feature list. A canning jar rack is a removable wire or nylon insert that sits inside a stovetop or pressure canning pot to hold jars upright and off the pot bottom so boiling water circulates around them evenly. Without that gap, heat penetration is uneven and the glass touches metal that is much hotter than the surrounding water.
Top 3 Canning Jar Rack Picks for 2026All 10 Canning Jar Racks Compared in 2026
Product Specifications Action
IMPRESA 11 Inch Stackable Canning Rack- Stainless steel
- 11 inch
- Pack of 2
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Concord 12 Inch Extra Thick Wire Rack- 3 mm wire
- 12 inch
- 8 pint or 7 quart jars
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FONLLAM 11 Inch Two Pack Rack- Tiered design
- 11 inch
- Non-stick surface
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Norpro Small Canning Rack- 8 inch
- 2 quart or 4 pint jars
- Folding handles
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KORCCI 12 Inch Rack with Contour Handles- 12 inch
- 7 pint or 6 quart jars
- Tongs included
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Southern Homewares Reversible Rack- 10.75 inch
- Reversible
- Stackable
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aoulela 11 Inch Four Pack Rack- Stamped steel
- 11 inch
- 4 racks
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Farm to Table Dual Nylon Rack- Nylon never rusts
- 11.5 inch
- 4 quart or 7 pint jars
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Cuxeedi 11 Inch Two Pack Rack- Stainless steel
- 11 inch
- Also a steamer rack
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Norpro Large Canning Rack- Chromed steel
- 12.25 inch
- 7 quart or 7 pint jars
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Do Jars Need to Be on a Rack When Canning?
| Product | Specifications | Action |
|---|---|---|
| IMPRESA 11 Inch Stackable Canning Rack |
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| Concord 12 Inch Extra Thick Wire Rack |
|
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| FONLLAM 11 Inch Two Pack Rack |
|
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| Norpro Small Canning Rack |
|
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| KORCCI 12 Inch Rack with Contour Handles |
|
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| Southern Homewares Reversible Rack |
|
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| aoulela 11 Inch Four Pack Rack |
|
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| Farm to Table Dual Nylon Rack |
|
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| Cuxeedi 11 Inch Two Pack Rack |
|
Check Latest Price |
| Norpro Large Canning Rack |
|
Check Latest Price |
Yes. Jars should sit on a rack for any water bath or pressure canning batch. The rack holds them off the pot bottom so water moves under and around every jar, which is what makes the published processing time accurate. Jars set straight on the pot base get direct contact with hotter metal, heat unevenly, and can crack from thermal shock. Some experienced canners process without a rack because water circulates anyway, but it is not the recommended method and we would not build a practice on it.
1. IMPRESA 11 Inch Stackable Canning Rack – Best Overall for Pressure Canners
- Strong rigid construction that holds jars steady
- Two racks let you double-batch in a single run
- Fits Presto 01781 and All American 21.5-quart canners
- Washes easily and stores compactly
- Will not fit narrower models such as the Presto 17-Quart Digital Canner
- You must measure your canner interior diameter to confirm the fit
This is the rack we come back to after looking at everything on the market. It carries the highest rating and by far the largest review base of any canning jar rack we evaluated, and more than nine thousand reviews is a real stress test for a piece of wire that spends its life in boiling water.
What sets it apart is the stackable design. Two 11-inch racks in one canner means you process a second layer of jars without draining the pot, which turns a one-batch evening into a two-batch evening. Buyers describe double-loading pint jars on the second level, and a few use the pair to separate layers of food inside a pressure cooker for other jobs entirely.
Fit is the whole story here. At 11 inches, it suits the larger canners, including the Presto 01781 23-quart and the All American 21.5-quart, and it needs 11 inches of usable interior diameter. It will not seat in a narrower model such as the Presto 17-Quart Digital Canner, and that is the single complaint that repeats in reviews.
Long-time canners on r/Canning make the same point we would: finding a rack that fits the pot you already own matters far more than the brand on the box. Measure first, buy second. If your canner has 11 inches of interior width, this is the safest bet in the roundup.
Who This Rack Works Best For?
It suits anyone processing 7 to 9 jars at a time in a wide pressure canner who wants to cut their batch time roughly in half. Owners running low-acid vegetables, meat or soups through a pressure canner get the most out of the second layer.
It also works for households with more than one canner going at the same time, since two racks means you can pull a full load without waiting for the pot to come back to a boil. We found no corrosion complaints worth worrying about, and at 4.9 ounces the pair is light to lift.
Who Should Look Elsewhere?
If your canner is a narrow digital model or a small soup pot under 11 inches inside, this rack simply will not go in. It is harder to justify if you are only processing four or five jars of jam once a year.
The lack of dedicated lifting handles means you lift jars off the rack individually or with tongs, rather than raising the whole load at once. If safe full-load lifting is your priority, the KORCCI contour-handle rack handles that job better.
2. Concord 12 Inch Extra Thick Wire Rack – Best Jar Stability
- Extra thick 3 mm wire resists bending under a full load
- Contoured handles rest firmly on the pot rim
- Holds 8 pint or 7 quart jars
- Stainless resists rust in hard-water areas
- Needs a pot at least 12.5 inches wide and 9.5 inches deep
- Not a universal fit so check pot dimensions first
Wire gauge is the feature nobody photographs and everybody notices after one season. Most racks in this category use 2 mm wire or thinner. Concord uses 3 mm, and the difference shows up exactly where racks usually fail: half-pint and jelly jars tipping over on a flat grid while you try to place the next one.
The contoured handles are the second reason we like it. They drop onto the pot rim while you load and stay there, so the rack does not slide sideways as you set jars down one at a time. On a full rack of 7 quart jars, that stability is worth more than it sounds.
Capacity is the headline number here: 8 pint jars or 7 quart jars in a single layer, which is more than a typical batch fills. It is a two-pack, so you can also run a second layer in a tall pot or keep a spare ready while the first is in use.
The fit requirement is unusually specific and the manufacturer does not hide it. You need a pot at least 12.5 inches wide and 9.5 inches high. That rules out most 12-quart and 16-quart pots, and it means this is a rack for people with a genuine large canner, not a general-purpose kitchen accessory.
When This Rack Earns Its Place?
Choose it when jar stability is a real problem for you. If you process small jars, half-pints, or tall narrow containers, the 3 mm wire is the difference between a controlled load and a tip-over mid-batch.
It is also the right answer for anyone whose water is hard enough that thin plated steel starts pitting within a season. Plain stainless without a decorative plating layer holds up better in those conditions.
Where It Falls Short?
The fit requirement is the dealbreaker for a lot of people. A 12.5-inch interior width is a real canner, and we would not buy this rack hoping it will fit a mid-size soup pot.
At 16 ounces per rack, this is one of the heavier wire options in the group. It does not double as a lightweight steamer insert the way some of the 11-inch options do.
3. FONLLAM 11 Inch Two Pack Canner Rack – Best Value for Everyday Water Bathing
- Tiered design processes more jars per batch
- Stainless steel resists corrosion over repeated use
- Non-stick surface rinses clean in seconds
- Two racks included at an entry price point
- Some buyers find the wire gauge less rigid than heavier options
- Handle-free design means jars come off one at a time with tongs
This one climbs the category rankings fast, and the reason is simple arithmetic. Two 11-inch racks in a pack that sits at the entry end of the category, in a size that fits the Presto and All-American canners most home canners already own.
The tiered shelf design is what separates it from a basic flat disc. Rather than one layer, you get a raised grid, which means the second layer of jars sits above the first with water moving between them. For jam season, when you are running batch after batch, that is the difference between two runs and one.
Cleaning is uneventful, which is what you want from a tool you use eight times in a row. The non-stick surface rinses clean, and the whole rack is 11 by 11 inches with a half-inch profile, so it slides into a canner without any awkward angling.
Compatibility is the other strength. Buyers confirm it works with the popular Presto and All-American canners, and the rated shelf capacity of 8 pounds gives a full load of jars comfortable headroom. It also lifts straight out for washing, and the silver finish suits a modern kitchen.
Why Most People Should Buy This One?
If you have an 11-inch canner and want the most processing capacity per purchase, this is the straightforward answer. The rating and review volume suggest very few buyers regret it.
It suits new canners who are still building a kit, because a rack plus a spare is more useful than a single premium rack. Those running pickling batches through a steam canner will also find the tiered layout handles smaller jars well.
Where It Falls Short?
The recurring note in reviews is that the wire is on the light side. If you routinely load half-pint or jelly jars, a heavier 3 mm rack like the Concord holds its shape better under a crowded load.
It also has no raised lifting handles, so you are pulling jars off the rack with tongs rather than raising the whole load. That is workable, but it is not the safest workflow in boiling water.
4. Norpro Small Canning Rack – Best for Small Pots and Jelly Batches
Norpro Small Canning Rack with Handles for Stockpot Water Bathing
- Right size for small batches and modest soup pots
- Often fits a 6-quart pot as a practical starter rack
- Handles make placement and removal safer
- Folds down for compact storage
- Chrome plating can peel and rust after a few uses
- Capacity is limited to 4 pint or half-pint jars
Not everyone cans 7 jars at a time. If your whole practice is a dozen jars of plum jam a year, a full-size rack is wasted space, and this 8-inch Norpro is the small-batch answer. It holds 2 quart jars, 4 half-pints or 4 one-pint jars, which is a realistic single session for a household of two or three.
The dimensions are 8 inches across by 7.5 inches wide and 1.5 inches high, which means it drops into modest soup pot sizes that a 12-inch rack would never enter. Several owners report it working in a 6-quart pot, which is genuinely useful if your kitchen has one burner and a small cabinet.
Folding handles do the practical work. They let you set the rack in the pot before the water is at a full boil, position jars on it, and lift the whole thing out afterward without reaching near the surface.
The weakness is the finish. This rack is chrome plated rather than solid stainless, and a recurring theme in reviews is plating flaking and rust appearing after only a few uses. That is the main reason it sits below the other metal racks on rating, and it is worth weighing hard if you are in a hard-water area.
Who This Rack Fits Best?
It suits first-time canners working in a single small pot, people who mostly make jam, and anyone who wants to test the hobby without committing cupboard space to a 12-inch disc.
It is also a sensible second rack for a larger setup, because you can process a few jars at a time while the big canner is still heating.
Who Should Skip It?
If you process more than about four jars per session, the capacity will slow you down more than any other factor in this roundup. Two batches of four takes noticeably longer than one batch of eight.
Skip it if you live in hard water and plan to keep it for years. The plating complaint is consistent enough that a solid stainless rack is a better long-term purchase.
5. KORCCI 12 Inch Rack with Contour Handles – Best for Safe Lifting
KORCCI 12in Stainless Steel Canning Rack with Contour Handles, Holds 7 Pint or 6 Quart Jars in Pressure Canner Pot
- Contour handles rest on the pot rim and fold flat for storage
- Silicone grip is anti-scald and non-slip
- Works with regular mouth and wide mouth jars
- Canning tongs included in the box
- Holds fewer jars than 12-inch racks rated for 8 pints or 7 quarts
- 12 inch by 11.5 inch footprint needs an unusually wide pot
Every rack in this roundup asks you to put your hands near boiling water at some point. KORCCI does the most to shorten that moment. The contour handles rest on the pot rim, the silicone grip is rated anti-scald and non-slip, and the whole handle assembly folds flat when you are done.
That fold-flat design is a real advantage in a small kitchen. Most 12-inch wire discs with fixed handles need their own shelf. This one goes in a drawer.
It holds 7 pint jars or 6 quart jars, and it works with regular mouth and wide mouth Mason jars of any size, which removes the sizing guesswork that trips people up. Jar compatibility is a genuine question for roundups like this one, and this rack sidesteps it.
At 20 pounds, the shelf capacity gives plenty of headroom under a full load. Canning tongs are included, which is a small but genuinely useful addition if you are also buying your tools from scratch.
Best Choice For Handling Safety
If you are new to canning, or if you have ever scalded yourself reaching over a pot of boiling jars, this is the rack to buy. The anti-scald silicone grip on a rim-resting handle is a clear safety feature across the racks we tested.
It is also good value as a second rack, since the handles fold away and it doubles as a general straining shelf for cooked vegetables.
Where It Falls Short?
The capacity is the honest limitation. At 7 pints or 6 quarts, it processes fewer jars per batch than the Concord 12-inch rack.
The rack is 12 inches across but 11.5 inches wide, so check the narrower dimension as well as the diameter if your pot is an unusual shape.
6. Southern Homewares Reversible Stacking Rack – Best for Mixed Jar Sizes
Southern Homewares Canning Rack for Pressure Cooker – Reversible Stacking System for Mason Jars & Food Storage, 2-Pack
- Reversible design fits half-pint
- pint and quart jars
- Flower petal cutouts circulate water evenly
- Stacks for double batching in 16-quart pots or larger
- Dishwasher safe and compact to store
- 10.75-inch footprint holds fewer jars than 12-inch racks
- Some buyers prefer racks with dedicated lifting handles
The reversible design solves a problem most racks ignore. Flip it over and the geometry changes to suit a different jar size, so the same piece handles half-pints, pints or quarts without buying a second insert. For a canner who alternates between small jelly jars and quart pickles, that is a genuine convenience.
The flower petal cutouts are not decoration. They keep water moving across the surface of the rack and around the jar bases, which supports even circulation during the boil. Owners also like that the whole thing is dishwasher safe, so cleanup between batches is a cycle rather than a scrub.
It stacks for a second layer in 16-quart pots or larger, which means the two-pack can double a standard batch if your pot is tall enough. The rack itself measures 10.75 inches across by 10.8 inches wide and 3.65 inches high, and weighs only 0.05 kg, so it is among the lighter options here.
Reviews sit mid-pack, and the reason is size and gauge rather than quality. It is smaller and lighter-gauge than the 12-inch stainless racks, so it simply holds fewer jars per run.
Where the Reversible Design Pays Off?
It suits a mixed-canning household, particularly anyone who does sweet jams in half-pints and pickles in quarts in the same season. Switching jar sizes takes a flip rather than a purchase.
It is also a good second-layer rack to own alongside a wider primary one, since the stacking design doubles capacity in larger pots without replacing anything you already have.
Where It Falls Short?
At 10.75 inches across, the footprint is small. If your pot has room for a 12-inch rack, this one leaves usable floor space empty and gives you a lower jar count per batch.
Owners who want to raise a full load of jars in one motion find it less convenient than the contour-handle options, so plan on using tongs and a jar lifter.
7. aoulela 11 Inch Four Pack – Best Budget Four-Rack Set
- Four racks give the most hardware per purchase in this roundup
- Large center hole makes the rack easy to grip and lift
- Stamped triangular structure feels sturdy for the gauge
- Dishwasher safe with no rust after a full season
- Material is thin enough that some buyers question long-term durability
- 11-inch size is too large for smaller canners
Four racks is an unusual amount of hardware to receive, and it means you always have a spare on hand. Owners treat them as backups and layerers rather than a single primary insert, which is exactly how we would use them.
The stamped triangular structure is a smarter geometry than a plain wire grid. Stamping the whole piece from a single block rather than welding wires together means fewer joints to flex, and buyers consistently report that the stamped piece feels sturdier than the gauge suggests.
The large center hole is the detail we would highlight. It gives you somewhere to grip the rack with a jar lifter or tongs and raise a full load out of boiling water, which is the problem the flat two-pack options create. A few owners even cut one rack to create a custom opening for quart jars so they can double-batch.
Compatibility covers the common names: Presto 01781 23-quart, All American 21.5-quart, T-fal P31052, Granite Ware 0730-2 and Mirro 92122A. It also doubles as a steaming rack for vegetables and fish, which adds real utility beyond canning.
Best Value for Layered Batches
With four racks you can run two layers in one canner and still have a spare, which is a workflow you cannot get from a single-rack purchase at any price. It suits batch canners who want to finish a season in one evening.
It suits pressure canners as well as water bath canners, since 11 inches matches the most common large canner interiors. The secondary-polished surface rinses clean and goes in the dishwasher.
Where It Falls Short?
The honest criticism is material thickness. Some buyers question how it holds up long term, and we would not stack a heavy load of tall jars on it the way we would on the 3 mm Concord.
It is also too large for smaller canners and autoclaves. If your pot is under 11 inches inside, this is not the pack to buy.
8. Farm to Table Dual Nylon Rack – Best Rack That Will Not Rust
Farm to Table Dual Canning Rack, Nylon, Quart or Pint Sizes 11.5 x 11.5 x 2
- Nylon cannot rust like chrome or plated steel
- Recessed base keeps jars upright with no tipping
- Gentler on countertops and on glass than metal
- Rinses clean in seconds and is dishwasher safe
- Holds only 4 quart jars per batch
- Raised profile can crowd tall jars in a short canner
This is the pick if you live in hard water and you are tired of watching metal racks deteriorate. The rack is made from high-temperature resistant nylon rather than steel, so rust is simply not on the table. It is also BPA free and dishwasher safe, and it rinses clean without leaving residue on the jar rims.
The recessed bottom is the feature owners care about most. Instead of a flat wire grid where a half-pint jar can sit on two wires and tip, each jar drops into a formed opening. For anyone who has knocked a jar over mid-batch, that difference is worth a lot.
It is also gentler on your worktop. Set a hot jar straight down on the counter and nylon will not scratch it the way a wire grid can. It measures 11.5 inches square and 2 inches high, and holds 4 quart jars or 7 pint jars.
The trade-off is height and capacity. Because the rack raises the jars, tall quart jars can crowd the rim in a shorter canner, and four quart jars is roughly half a typical canner load. Plan on two runs for a full batch of quarts.
Where Nylon Wins Clearly?
It suits hard-water households, coastal kitchens, and anyone storing a rack in a damp shed between seasons. It also suits canners who move jars around after processing, since the material will not mark glass or metal surfaces.
If tipping jars is your recurring frustration, the recessed openings solve it in a way no flat wire rack in this roundup can match.
Where It Falls Short?
Four quart jars is the limit, so batch canners will run two sessions where a 12-inch stainless rack runs one. Tall narrow jelly jars can also tip in the smaller openings, so it is not a fix for every tipping problem.
Your pot must be larger than 11.5 inches for it to fit at all, which excludes a lot of standard 12-quart pots.
9. Cuxeedi 11 Inch Two Pack – Best Multi-Purpose Rack
- Two racks support dual-layer batches that save a full run
- Stainless steel holds up to high heat without rusting
- Doubles as a steaming rack for vegetables and seafood
- Entry-level price for a two-rack set
- Very thin profile offers less jar support than heavier-gauge racks
- No dedicated lifting handles for removal from boiling water
If you want one piece of equipment that earns its drawer space outside of canning season, this is the one. Buyers routinely use it as a steaming rack for vegetables, seafood and baking, which turns a niche canning accessory into a weekly kitchen tool.
At 11 inches it fits the Presto, All-American, T-fal and similar canners, and the two-rack format gives you a second layer for jams, fruits and vegetables. The stainless steel holds up to canning temperatures without rusting.
The profile is thin at 0.2 inches, which is both its virtue and its drawback. It slides into a canner easily and nests for storage, but a flat surface gives half-pint jars less lateral support than a contoured or heavier rack.
Ratings cluster around four stars, and the feedback is consistent: good material, good versatility, a little too flat. It is treated as a practical add-on for a second layer rather than a premium primary rack, and we would agree with that framing.
Best for Everyday Versatility
It suits cooks who want a rack for the steamer basket job as much as the canning job. Seafood, frozen vegetables and baked goods all work, and both pieces clean up in the dishwasher or under a quick rinse.
It also makes sense as a backup pair, since a rack that spends half the year in a pressure cooker should not be the only one you own.
Where It Falls Short?
There are no handles. You will be lifting jars off individually with tongs or a jar lifter, so it is not the choice if safe full-load lifting is your priority.
The flat profile also means jars rattle more than on a rack with formed openings. For delicate half-pint jars, the nylon or 3 mm options are steadier.
10. Norpro Large Canning Rack – Best for Lifting Jars to the Pot Edge
- Handle design raises jars to the canner edge for easy removal
- Side handles protect hands around hot water
- Handles fold flat for compact storage
- Fits Norpro Pot 658
- Chromed steel is prone to rust and pitting over time
- 12.25-inch diameter will not fit smaller soup pots
This rack has been around since the Norpro 604 and it earns its place on one specific idea: instead of fishing around in boiling water for each jar, the handle design lifts the jar to the canner edge where you can take it out one at a time with your fingers clear of the water.
It measures 12.25 inches across and 2.25 inches high, holds up to 7 quart or 7 pint jars, and it fits Norpro Pot 658 directly. The side handles fold flat, so it stores against a wall when you are not canning.
It carries the lowest rating in this roundup at 4.1 stars, and the reviews explain why in one word: the finish. Chromed steel deteriorates and rusts over time, especially in hard water, and that complaint appears again and again across several hundred reviews.
The flatter design also gives less lateral support than a wire grid, so small jars are more likely to shift. Both are reasons to weigh the KORCCI or Concord racks first if you are buying new.
Where the Handle Design Still Wins?
For anyone who lifts jars out of a full pot by hand, the raised-edge approach is genuinely safer than reaching into boiling water. It is a decades-old design that has not needed improving.
If you already own Norpro Pot 658, this rack is guaranteed to fit, which removes the biggest risk in buying any rack at all.
Where It Falls Short?
The chromed steel finish is the deciding factor. In hard water, expect pitting within a season or two, and food safety questions about rusted pot gear come up repeatedly on home canning forums.
At 12.25 inches across, it will not fit most standard soup pots either. Combined with the finish, that makes this a rack to buy only for the specific pot it was designed for.
How to Pick the Right Canning Rack for Your Pot?
Measure your pot’s interior diameter before you buy anything. This is the single most-asked question on r/Canning and the thing almost every competitor page skips. Take a tape measure or a ruler, drop it to the bottom of the empty pot, and measure wall to wall at the narrowest point.
Then buy a rack that is about 0.5 to 1 inch smaller than that interior measurement. A rack that measures the same as the pot wall will sit loosely, jars will wobble, and water will surge through the gap. A rack that is too large will simply not drop in, or will catch on the rim.
Also check the pot’s interior height, not just its width. The Concord 12-inch rack specifically needs 9.5 inches of interior height, and a rack that raises jars high, like the nylon option, can crowd tall jars in a shallower canner.
For multi-pot households, the reviewers on Houzz who own more than one canner make a practical point that goes beyond any single product: a rack that also works as a steamer insert earns its space in a busy kitchen. Several of the stainless options here double for vegetables, seafood and baking.
If you are still working out your pot, our guides to pressure pots and rack-style cookware cover the vessel side of the equation.
Stainless Steel vs Nylon Canning Racks
Stainless steel wins on capacity, jar support and versatility. It is the material that reaches 8 pint or 7 quart jars in a single layer here, it handles high heat without warping, and it doubles as a steamer. Choose it if you process full batches, and choose a thicker gauge if you load small jars.
Nylon wins on durability of the finish and on jar stability for small containers. It will never rust, it will not scratch a worktop, and its recessed openings stop half-pint jars from tipping. Choose it if you are in hard water, if you only process a few jars, or if tipping jars is your recurring frustration.
The one hard rule: do not use a rack with active rust or pitting. If a cheap chrome-plated rack has started to pit, replace it rather than trying to season it, because the flakes end up in the water your food sits in.
How to Use a Canning Rack in a Water Bath?
Set the rack in the empty pot first, then add water, then bring it to a boil. Most canners add the rack before heating because dropping a cold wire rack into a pot of near-boiling water can warp thin wire or bend a rim-resting handle.
Fill the pot until the water sits about 1 inch above the tops of the jars once they are in place. This is not optional. That inch of standing water above the lid is what conducts heat into the jar contents, and if you cannot achieve it, your pot is too narrow or too shallow for the batch. A rack does not solve that problem on its own.
Lower the jars onto the rack with a jar lifter, keeping fingers clear of the surface. Keep the heat at a rolling boil and start your processing timer only when the water returns to a boil after the last jar goes in.
When the processing time is done, turn off the heat and let the pot sit for 5 minutes before removing jars. Lifting straight into a cold sink or outdoor air can thermal-shock the glass.
Can You Sterilize Canning Jars Without a Rack?
You can, technically. Jars can be sterilized in a dishwasher, in a microwave, or by holding them in boiling water with no rack at all, and the water will circulate on its own if the jars are not touching the pot base. But the rack is what keeps jars off hot metal, keeps them upright, and stops them from cracking against each other. Treat the rack-free method as a backup rather than a plan.
How Long Do You Boil Jars to Sterilize Before Canning?
Most modern canning recipes assume jars are already sterilized, so no pre-boil is needed. When a recipe does call for it, 10 minutes in boiling water is the standard figure for water bath canning, while pressure canning methods often call for 10 to 15 minutes. Always follow the specific recipe and the current USDA guide rather than a general number.
What to Use Instead of a Canning Rack?
If nothing on this list fits your pot, a few substitutes work for water bath canning, and each has a catch worth knowing.
A heavy-gauge cooling or cake rack from the kitchen works because it elevates jars and lets water move underneath. The catch is that most are made for a 10 or 12-inch pan, so the diameter often does not match your canner, and the wire is thin enough to flex under a full load. This is the most common substitute recommended on home canning forums, and it works for small batches.
Another option is canning jar rings laid in a circle on the pot bottom, which work for a few jars because each ring is sized to a jar base. For pressure canning, neither substitute is appropriate, since a pressure canner needs a rack rated for the weight of a full load at high heat.
A common thread in the r/Canning advice we read is that experienced canners prefer to spend on a proper stainless rack matched to their pot rather than to keep adapting substitutes. It is a small accessory that saves trouble for years.
Frequently Asked Questions
What is the best canning rack?
The best canning rack is the one whose diameter is 0.5 to 1 inch smaller than your pot’s interior width and whose capacity matches your batch. The IMPRESA 11 Inch Stackable Rack is our top pick because of its 4.8 rating across more than 9,400 reviews, its rigid stainless construction and the fact that two racks let you process a second layer without draining the pot.
Do jars need to be on a rack when canning?
Yes. Jars should sit on a rack for any water bath or pressure canning batch so water circulates under and around them and the published processing time stays accurate. Jars set directly on the pot base get uneven heat and can crack from thermal shock when they touch hotter metal than the surrounding water.
What to use instead of a canning rack?
A heavy-gauge cake rack or cooling rack of matching diameter is the most common substitute, and canning jar rings laid in a circle also work for a few jars. Both keep jars off the pot base so water circulates. Neither is rated for a full load in a pressure canner, so buy a proper stainless rack if you pressure can.
What size canning rack fits my pot?
Measure the interior wall-to-wall width of your empty pot, then choose a rack about 0.5 to 1 inch smaller. Also check interior height, since some racks need 9.5 inches of clearance and racks that raise jars high can crowd tall jars in a shallow canner.
Is a rusty pot rack safe for canning?
No. Replace a rack that has started to pit or flake, especially a chrome-plated one, because rust flakes end up in the water the food sits in. Choose solid stainless or a high-temperature nylon rack instead, and dry stainless racks fully after each use to slow corrosion in hard water.
Can I use a stainless steel pot for canning?
Yes, provided the pot is tall and wide enough to hold the jars with about 1 inch of boiling water above the lids once processing begins. A deeper pot such as a pressure canner is easier to work with than a tall soup pot, and many canners fit an 11-inch rack to the canner they already own rather than replacing it.
Which Canning Jar Rack Should You Buy?
Start by measuring your pot, because fit decides more than any feature. With 11 inches of usable interior diameter, the IMPRESA 11 Inch Stackable Canning Rack is the pick: a 4.8 rating across more than 9,400 reviews, rigid stainless wire, and two racks so you can process a second layer without draining the pot.
If you want the most capacity per purchase, the FONLLAM two pack gives you the same 11-inch footprint and a tiered layout at an entry price point. If jar tipping is your problem, the Concord 12-inch rack solves it with 3 mm wire, or the nylon Farm to Table rack with its recessed jar openings if you also want something that never rusts.
And if safe lifting matters most to you, pick the KORCCI rack with contour handles and an anti-scald silicone grip, which folds flat into a drawer when canning season ends. Whichever one you choose, measure the pot first, check the interior height as well as the width, and only then order.