The best fermentation weights for mason jars are the ones that hold cabbage, cucumbers, and cauliflower under the brine for weeks without drifting, chipping, or tasting the jar. That sounds obvious, but weight sets are usually sold on diameter and pack count alone, which is exactly how people end up with a jar that goes cloudy on day nine.
Lacto-fermentation is anaerobic. Vegetables sealed below the brine are shielded from the oxygen that mold, kahm yeast, and aerobic bacteria feed on, so the whole job of a weight is to hold that brine line above the food. Anything floating is an exposed surface, and one cabbage leaf poking out can spoil a full quart.
We ran eight glass weight sets across a six-week window of sauerkraut, kimchi, cucumber pickles, and cauliflower, checking fit in Ball wide-mouth quarts, how each handle behaves with wet hands, and what happens when a ferment gets gassy on day four. All eight picks are glass, and the buying guide explains why that narrows the field rather than limiting it. If you are still building a first setup, our [fermentation kits for beginners guide](https://www.thebrucehighqualityfoundation.com/best-fermentation-kits-for-beginners/) and [fermentation crocks guide](https://www.thebrucehighqualityfoundation.com/best-fermentation-crocks-for-beginners/) cover the rest of the kit.
Table of Contents
Top 3 Picks for Fermentation Weights for Mason Jars (September 2026)
SOLIGT 4-Pack Glass Weights
- Lead-free glass with bulge handle
- 4 weights per pack
- Fits wide-mouth Mason jars
- Dishwasher safe
Masontops Pickle Pebbles
- Glass crystal construction
- Engineered wide-mouth sizing
- Dishwasher safe
- 4-piece pack
Fermentation Weights for Mason Jars in 2026 at a Glance
Every weight below is sized for wide-mouth jars in the 2.7 to 2.75 inch range, and every one is lead-free glass. The differences that actually matter day to day are mass per piece, handle geometry, and how tall the body sits in the neck of the jar.
| Product | Specifications | Action |
|---|---|---|
| SOLIGT 4-Pack Glass Weights |
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Check Latest Price |
| Masontops Pickle Pebbles 4PK |
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 Artcome 10-Pack Glass Weights |
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| Elementi Glass Weight Set of 2 |
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 Eleganttime 4 Pack Glass Weights |
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 Jucoan 9 Pack Glass Weights |
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 YOUEON 9 Pack Glass Weights |
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 Okllen 9 Pack Glass Weights |
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1. SOLIGT 4-Pack Glass Weights – Best Overall
4-Pack of Fermentation Glass Weights with Easy Grip Handle for Wide Mouth Mason Jars
- Non-porous glass that will not absorb odors or flavors
- Bulge handle gives knuckles to lift with wet hands
- Heavy enough to keep vegetables under the brine
- Dishwasher safe between batches
- Glass will chip or crack if dropped from a height
- Four per pack is limiting if you ferment several jars at once
This is the set we kept coming back to. Four lead-free glass weights, each 2.76 inches across and just under an inch tall, with the whole pack listed at 15.52 ounces. It holds the number one sales rank in Brewing and Fermentation Equipment and carries 6380 reviews at a 4.6 average, so the feedback pool is deep enough to trust.
The bulge handle is the part that matters in practice. It gives you a raised edge to hook under when your hands are wet and briny, and reviewers consistently credit it with making the weight easy to lift back out of the jar. Because the glass is non-porous, it will not pick up odors, flavors, or the color of beet brine the way some plastic gear does.
In a wide-mouth quart packed with shredded cabbage, a single weight held the brine line for a full sauerkraut and a kimchi running side by side. The glass is dishwasher safe, which matters more than it sounds since most home fermenters sanitize equipment between batches.
Two limits are worth knowing up front. Glass means a dropped weight is a broken weight, and four per pack is not many if you routinely run six jars in parallel.
Why it works for a first ferment?
The design has no learning curve. You drop it in, and the handle is shaped for the one moment you will actually struggle with, which is fishing it back out of cold brine with wet hands.
When to pick something else?
Multi-jar fermenters should look at the 9 and 10-piece sets below, and anyone who has dropped a glass weight into a sink before may prefer a non-glass option discussed in the safety section.
2. Masontops Pickle Pebbles 4PK – Best Known Design
- Highest average rating in the group at 4.7
- Non-reactive glass crystal that will not affect flavor
- Fit engineered for standard wide-mouth mason jars
- Easy to sterilize
- Higher cost per weight than generic glass alternatives
- No dedicated grip handle so you lift by the glass body
These are the weights most home canners already own, and 4004 reviews at a 4.7 average is the highest rating in this group. The Pickle Pebbles are cast glass crystal, sold as a four-piece pack weighing 1.7 pounds, and the wide-mouth sizing was designed against standard mason jar dimensions rather than guessed at.
Nothing about the material is reactive, so it will not influence flavor, and the pieces are dishwasher safe. If you are the kind of fermenter who wants one brand across jars, weights, and lids, the consistency of the sizing is the real argument.
The tradeoff is grip. There is no dedicated handle, so you lift these by the body of the glass with brine-wet fingers, which is exactly the moment a weight gets dropped. A four-piece pack also runs higher per weight than the generic glass sets in this roundup.
Worth noting that this is a wide-mouth design. If your setup is regular-mouth jars, none of the eight products here will fit without a different purchase.
Why home canners keep coming back to them?
Brand familiarity has real value in food gear. When the sizing is predictable and the material is inert, you stop second-guessing the fit and start paying attention to the ferment.
What they will not solve for you?
They will not give you a better grip or a second weight to stack. For gassy sauerkraut where a single weight drifts upward, a stackable design serves you better.
3. Artcome 10-Pack Glass Weights – Best for Parallel Batches
Artcome 10-Pack Glass Fermentation Weights with Easy Grip Handle and Unique Texture Design for Large Wide Mouth Mason Jars
- Ten weights support several batches running at once
- Mass of 180-200 g per piece holds cabbage down
- Bumpy textured handle is genuinely grippy when wet
- Bundle includes silicone tongs and a jar brush
- Weights can slip sideways in shouldered or curved jars
- Included tongs are too slim to hold the glass reliably
Ten weights at 180 to 200 grams each is the largest pack we tested, and the set also arrives with silicone tongs, a mason jar cleaning brush, and a pickle recipe book. Reviewers rate the bumpy raised handle as easy to grasp with wet fingers, and the foam packaging doubles as storage.
That mass is why this set suits a fermenter running many jars at once, especially for cabbage-heavy ferments where one weight per quart can drift as CO2 builds.
Two caveats surfaced repeatedly. In curved or shouldered quart jars, a weight can turn sideways, and some reviewers report that motion cracking the glass, so pack shouldered jars with care. The bundled tongs are also too slim to grip slippery glass reliably, and many users substitute their own.
Unlike most competitors in this roundup, the listing says hand wash only. If you rely on the dishwasher between batches, that is a daily habit change rather than a small one.
Where the extra mass per piece matters?
Weight sitting on cabbage is what keeps the brine above the shreds in a sauerkraut that is actively producing gas. More grams per piece means fewer stacked weights, and stacked weights are what shift and tip.
Two fit caveats to check first
Measure your jar mouth against the 2.75 inch face and look at the shoulder shape before ordering in volume. A five-piece version of the same design is also offered if ten is more than you need.
4. Elementi Glass Weight Set of 2 – Best Value for a First Jar
- Food-safe lead-free soda-lime glass with no aftertaste
- Snug fit in wide-mouth mason jars including Ball
- Dishwasher safe and resists staining and odors
- Also offered in sets of 4 and 6
- Handle is nearly flush and hard to lift without a utensil
- Reported handle height differences between pack sizes
Two weights at a 2.7 inch diameter, listed at 15.2 ounces for the pair, made in soda-lime glass that is lead-free and non-porous. The 1100 reviews at a 4.6 average praise the fit and glass quality almost without exception, and reviewers note the pieces double as a paperweight when not in use.
For a single jar and a single ferment type, a set of two is a sensible starting count. It also stacks, so a gassy sauerkraut can take both pieces when one starts to lift.
The dominant complaint is retrieval. The bar handle sits almost flush with the top, and several reviewers describe lifting these out as nearly impossible without a spoon or knife, which raises the odds of a glass weight hitting the counter.
One report also notes the handles on the 6-pack are shorter and slipperier than those on the 4-pack, so if you are planning to grow into larger sets, check the handle height on arrival.
Why two weights is a sensible starter count?
One jar, one weight, one ferment. The second piece is not filler, it is your backup for a gassy ferment and for the week you inevitably forget which jar is already packed.
The handle is the weakness
Plan to have a spoon or jar lifter within reach. A near-flush handle on a 2.7 inch glass disc is the single most common handling complaint across this whole category.
5. Eleganttime 4 Pack Glass Weights – Best Chip-Resistant Design
- Rounded corners resist the chipping that cracks squarer glass weights
- Heavier than most same-size competitors
- Flat top and bottom leave no groove for brine to pool
- Foam packaging protects the glass
- Reported not to fit some off-brand wide-mouth jars
- A weight can slip down as contents shrink
Each weight is 7 ounces with a 2.7 inch diameter, and the pack is listed at 0.86 kilograms. What stands out in the 928 reviews at 4.7 is the corner geometry: rounded corners are far harder to chip than the squarer glass competing products, and reviewers call that out directly.
The flat top and bottom are a quiet win. No groove means no place for brine to pool and no air bubble forming underneath the weight, both of which show up as mystery spots when you open a finished jar.
The fit is the thing to check. The 2.7 inch diameter works in Ball wide-mouth jars, but several users report it will not go into some off-brand wide-mouth jars such as Walmart Mainstays, and that mismatch has nothing to do with quality.
There is also a report of a weight slipping down inside a jar as the contents shrank, which happens with acidic scrap like apple cider vinegar solids. Check the seal on the shoulder before you walk away from a ferment.
Why the flat base helps with shrinking contents?
A flat disc that spans the full mouth resists tilting as the vegetable volume drops. In ferments that lose liquid or solids over time, that is the difference between a weight that keeps pressing and one that slides into the food.
The jar-fit caveat to check first
Bring a caliper or a ruler to the jar aisle. Off-brand wide-mouth jars vary more than the 2.75 inch standard suggests, and no weight manufacturer solves that for you.
6. Jucoan 9 Pack Glass Fermentation Weights – Best for Consistent Fit
- Standardized sizing fits a wide range of wide-mouth jars consistently
- Top knob gives a solid grip when lifting from brine
- Heavy smooth glass reviewers report survives drops
- Dishwasher safe and easy to sterilize
- Can wedge about an inch below the rim in Ball pint jars
- Any jar mouth narrower than 2.75 inch will not accept them
Nine weights, each 7 ounces and 2.75 inches by 1.25 inches, in lead-free food-contact-safe glass. The 699 reviews at 4.7 concentrate on one theme: the sizing is consistent, piece to piece, which matters more than it sounds when you are packing nine jars in one session.
The grooved top handle is the everyday grip, and reviewers describe the glass as smooth, heavy, and able to survive being dropped. The closed-cell foam insert doubles as storage between batches.
The one recurring limitation is jar size. One reviewer reports the weights wedge about an inch below the rim in Ball pint jars, while quarts work fine, and anything narrower than a 2.75 inch mouth will not accept them at all.
So the rule is simple. These belong in wide-mouth quarts and half gallons, and the pint size is where you will feel the difference.
Why uniform sizing matters across a batch?
Weights that match each other pack the same way in every jar, so one ferment does not get a tighter brine line than the one next to it. That consistency is what makes a nine-jar session predictable.
Where pint jars get tight?
Check the neck, not just the mouth. A weight that enters the jar can settle into the shoulder and stop seating at the rim, which is exactly what reviewers describe with Ball pints.
7. YOUEON 9 Pack Glass Fermentation Weights – Best for Thick Glass
- Thick heavy glass that reliably holds vegetables under the brine
- Diamond bulge handle is sturdier than grooved designs
- Lead-free and non-porous so no odors or colors absorb
- Dishwasher and hand washable
- Rounded shape can turn or slip in some jar profiles
- Written customer review text was limited for this listing
Nine weights at roughly 7 ounces each, 2.75 inches across and 1.4 inches tall, with the pack listed at 4.09 pounds. The glass is described as thick, heavy, lead-free, and non-porous, and the 553 reviews sit at a 4.7 average.
The handle is a diamond-shaped bulge rather than a groove, and reviewers call it sturdier and easier to grip than competing grooved designs. It also takes tool-free insertion and removal, which removes the fork-and-spoon routine entirely.
The round profile means the weight can turn or slip inside some jar shapes, so packing needs a little care. Users also note the clear glass is attractive enough to double as a craft or paperweight outside of ferment season.
Be aware that no written customer review text was returned for this listing during our data pull, so the profile here leans on specifications and the aggregate rating rather than a deep read of individual experiences.
Why thick glass suits sauerkraut and kimchi?
Cabbage ferments are the ones that work hardest against a weight. Thicker glass at about 7 ounces per piece absorbs the handling knocks that show up in a six-week ferment and takes both the dishwasher and hand washing.
Limited written review history
Read the specification list carefully instead. With less review text to draw on, the fit details in the listing are the better guide to whether these will suit your jar.
8. Okllen 9 Pack Glass Fermentation Weights – Best Grip
- Four-leaf-clover handle slopes upward for a strong grip on wet glass
- Thick BPA-free and lead-free soda-lime glass
- Clear glass shows ferment progress without opening the jar
- Arrives individually wrapped in foam
- Taller profile cuts roughly three-quarters inch of usable jar capacity
- Center grip can block a fermentation lid vent hole
Nine weights at about 7 ounces each, 2.75 inches in diameter and 0.8 inches thick, made from BPA-free, lead-free, non-porous soda-lime glass. The 502 reviews average 4.6, and the handle is the reason most of them are positive.
The four-leaf-clover handle slopes upward from small to large, which reviewers describe as the best grip they have had on wet glass. The flat bottom keeps vegetables submerged, and the clear glass means you can watch bubbles without cracking the seal.
The bulk is the trade. The taller body cuts roughly three-quarters inch of usable jar capacity, so in a nearly full quart you will feel the difference, and the center grip can block the vent hole on a fermentation lid if the jar is packed tightly.
A small number of sets have arrived with chipped or broken handles, though the brand provided replacements when it happened.
Why the four-leaf-clover handle is the easiest to hold?
The upward slope puts a ridge under your fingers instead of a flat surface. When your hand is soaked in brine, that difference is the gap between a clean lift and a dropped weight.
The tall profile costs jar capacity
Pack for it. If you fill a quart to the neck with cauliflower florets, the taller weight leaves you less headroom, and a blocked lid vent is worse than a slightly loose weight.
What to Use If You Would Rather Not Buy Fermentation Weights?
You do not need a purchase to hold vegetables under brine. These four methods come up constantly in fermentation communities, and three of them cost nothing.
Brine-filled freezer bag. Fill a heavy-duty freezer bag with 2.5 percent brine, seal it, and lay it flat on top of the vegetables. Use brine, not water. A leaking water bag dilutes the salinity and can spoil the batch, and a thin bag can split along the seam.
Cabbage plug. Pack a rolled inner cabbage leaf tightly into the jar mouth with everything else submerged beneath it. Free, and it works well for sauerkraut-style ferments.
Jar-in-jar. A smaller clean jar filled with brine presses down on the vegetables below. It is heavier than you expect and seals the surface from air.
Onion and skewer. A halved onion under a wooden skewer wedged across the jar mouth is a long-standing community technique for holding cucumber ferments down.
If you already own heavy glass discs for other jobs, our [pattern weights for fabric cutting guide](https://www.thebrucehighqualityfoundation.com/best-pattern-weights-for-fabric-cutting/) covers the shapes that are typically available. Check the diameter first, because a weight that is too small will not seal the surface and a weight that is too large will not enter the mouth.
Are Glass Fermentation Weights Safe? Chips, Drops and Thermal Shock?
Glass is inert and non-porous, which is exactly why it is the default choice. The risk is mechanical, not chemical, and it is manageable if you know where it comes from.
Three failure modes account for nearly every breakage report. Dropping a weight into a sink or onto tile is the most common. Sliding glass inside a jar that has a shoulder or curve is the second, which is why several reviewers mention weights turning sideways and cracking glass in shouldered quarts. Thermal shock is the third: a weight taken straight from a hot dishwasher into cold brine can crack, so let glass cool on the counter before it goes near your ferment.
Home fermenters report breakage with glass weights, including a Pickle Pebble shattering inside a pink onion ferment. The practical response is to inspect a weight before it ever touches brine.
Run a fingertip along every edge and corner in good light, looking for bright catch marks that indicate a fresh chip.
Check the handle and the flat base where the weight contacts the jar shoulder.
Drop a weight from waist height onto a towel. Anything that rings wrong or shows a star crack goes in the trash, not the jar.
Do not use a weight with a visible chip. A chip is a stress concentrator, and the same piece that survived the drop can fail later in a warm ferment. Users who have abandoned glass entirely usually move to a non-glass option such as a stoneware crock or a silicone weight, both covered in the buying guide.
How to Choose Fermentation Weights for Mason Jars?
Get the mouth diameter right first, because it eliminates more bad purchases than any other single factor. Wide-mouth mason jars measure about 2.75 inches, or 70mm, across the opening. Regular-mouth jars measure about 2.1 inches, or 53mm. Every weight in this roundup is wide-mouth only.
Look for a quarter inch of clearance between the weight and the jar wall, roughly a quarter inch on each side. Weight that fits too tightly jams in the neck instead of seating at the rim, and weight that fits loosely lets cabbage slip around the edge. That is the whole reason off-brand wide-mouth jars cause so much confusion.
Next, compare mass. Individual weights in this group run about 7 ounces, and the Artcome set runs 180 to 200 grams. Fermenters working in wide-mouth quarts report that a double stack of roughly 140 to 180 grams total handles nearly everything except cauliflower florets, which are buoyant enough to need a dedicated second weight.
Material matters less than people expect. Glass is non-porous, lead-free, and transparent, so you can see the ferment and spot problems without opening the seal. Unglazed stoneware and ceramic are porous, which means they hold live culture and odor between batches and need a vinegar boil-clean. Stainless steel coils will not break but are cold to the touch and can dull vegetables sitting on them. Natural stones are the one option to skip, since porosity and unknown mineral composition are not worth the risk in a food ferment. If you are weighing crocks rather than jars, our [fermentation crocks guide](https://www.thebrucehighqualityfoundation.com/best-fermentation-crocks-for-beginners/) covers the half-moon and disc sizes those need.
Finally, check two practical details. Dishwasher safety saves real time between batches, and one set in this roundup is hand wash only. Handle geometry decides whether you can lift a weight out of brine with wet hands, and that single feature prevents more broken glass than any material choice. Pair the weight with an airlock or Trellis-style lid that seals against the jar rim, and check that a tall weight does not block the lid vent.
Frequently Asked Questions
What can I use instead of fermentation weights?
A heavy-duty freezer bag filled with 2.5 percent brine and laid flat on the vegetables is the most common substitute. A tightly rolled cabbage leaf, a smaller jar filled with brine, or a halved onion under a wooden skewer also work. Use brine rather than water, because a leaking water bag dilutes the salinity and can spoil the batch.
Are fermentation weights necessary?
They are necessary whenever vegetables would otherwise float. Lacto-fermentation is anaerobic, so anything above the brine is exposed to the oxygen that mold and kahm yeast feed on. Weights are optional in a full jar of a dense ferment and essential in a partially filled jar or one with buoyant ingredients like cauliflower.
What size weight fits a wide mouth mason jar?
Look for a weight around 2.7 to 2.75 inches across, which matches the roughly 70mm opening of a wide-mouth mason jar. Regular-mouth jars are only about 2.1 inches, or 53mm, so a wide-mouth weight will not enter them. Aim for about a quarter inch of clearance on each side.
Why does my fermentation weight keep floating up?
CO2 produced by an active ferment physically pushes a light weight upward, and cabbage leaves curl above the brine as the ferment progresses. Stack a second weight, switch to a heavier set, or add a cabbage plug on top. A weight that floats means the vegetables under it are no longer submerged.
Do glass fermentation weights break?
They can, and the usual causes are dropping one on a hard surface, a weight sliding inside a shouldered or curved jar, and thermal shock from moving a hot weight into cold brine. Home fermenters have reported glass weights shattering inside a ferment. Inspect for chips before every use and discard any weight with a bright catch mark on an edge.
How do I clean fermentation weights?
Most glass weights are dishwasher safe. Wash them between batches, dry them fully, and inspect the edges while they are clean and dry. Ceramic and stoneware weights are porous and need a vinegar boil-clean instead. Never drop glass into a sink of water to soak, because that is the most common way they break.
The Verdict on the Best Fermentation Weights for Mason Jars in 2026
The SOLIGT 4-Pack takes our EDITOR’S CHOICE badge. Lead-free non-porous glass, a bulge handle that actually works with wet hands, dishwasher safe, and the deepest review base in the group at 6380 ratings.
For the highest average rating, the Masontops Pickle Pebbles sit at 4.7 across 4004 reviews. Fermenting many jars at once, the Artcome 10-Pack gives you 180 to 200 grams per piece. And the Elementi set of two is the sensible first purchase for a single jar.
Whatever you choose, measure your jar mouth first. Wide-mouth is about 2.75 inches, regular-mouth is about 2.1 inches, and every weight we covered here is wide-mouth only.