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Fermentation Crock, 7L

Glazed stoneware with a water-lock seal, 7 litres

4.7 · 176 ratings
$79.00 $99.00

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Description

Two gallons, for when one jar at a time stopped being enough. Same water-lock rim as the 3L — a channel of water does the sealing, so gas escapes and air stays out without an airlock to fuss over.

Wide enough at the mouth to pack whole quartered cabbages and get your hand back out. Glazed throughout, so it moves between ferments without carrying the last one along.

  • Holds 5–7 cabbages — roughly twelve mason jars of sauerkraut
  • Water-lock rim seals without a lid clamp or airlock
  • Fully glazed interior: non-porous, won't craze or hold odours
  • Includes two half-moon ceramic weights and a wood tamper

Materials & care

Glazed ceramic. Wash by hand with warm soapy water and dry before storing. Keep the water channel topped up while fermenting. Avoid sudden temperature changes.

Dimensions

7 litres / 2 gallons. Ships at 15.5 × 12.9 × 11.2 in, 10.3 lb.

Specifications
MaterialGlazed ceramic (stoneware), glazed inside and out
Capacity7 litres (about 1.85 US gallons; sold as a 2-gallon crock)
Holds5–7 medium cabbages, roughly twelve quart jars of finished sauerkraut
SealWater-channel rim; no airlock, clamp or gasket
In the boxCrock, domed lid, two half-moon ceramic weights, wooden tamper
InteriorWhite glaze, non-porous, does not hold odours
Shipped size15.5 × 12.9 × 11.2 in
Shipped weight10.3 lb
CareHand wash with warm soapy water; avoid sudden temperature changes
Best forLarge batches of sauerkraut and kimchi, whole quartered cabbages
Shipping & Returns

Free shipping on orders over $99 within the lower 48; below that, this item ships for a flat $19.95. Orders leave within 1–2 business days and usually arrive in 3–5. Alaska, Hawaii and US territories are quoted at checkout.

Unused items in their original condition can be returned within 30 days of delivery for a full refund. If your piece arrives damaged, email hello@tomostoneware.com with a photo and we will replace it.

Questions about this piece

How many cabbages fit in the 7-litre crock?

Five to seven medium heads of shredded cabbage, or whole quartered cabbages for kimchi. That comes out at roughly twelve quart jars of finished sauerkraut.

Do I need an airlock or a clamp?

No. A channel around the rim holds a ring of water. Gas escapes through it as the ferment works and air cannot get back in. Top the channel up every few days; in a normal kitchen it needs water every 5–10 days.

Is the mouth wide enough for whole cabbage quarters?

Yes. The mouth is wide enough to pack quartered napa cabbage for kimchi and to get your hand back out. The two half-moon weights sit on top and hold everything under the brine.

What is included?

The crock, its domed lid, two half-moon ceramic weights and a wooden tamper.

How is the 7-litre different from the 3-litre?

Only in size. Both are fully glazed, both seal with the same water channel and both come with two weights and a tamper. The 7-litre takes five to seven cabbages instead of two to three and weighs about 10 lb shipped instead of 7 lb.

Can it go in the dishwasher?

Wash it by hand with warm soapy water and let it dry before storing. Keep it away from sudden temperature changes.

How much does shipping cost?

Orders of $99 or more ship free within the contiguous United States. Below that, this item ships for a flat $19.95 to the lower 48 states; Alaska, Hawaii and US territories are quoted at checkout. Orders leave within 1–2 business days and usually arrive within 3–5 business days.

What is the return policy?

Unused items in their original condition can be returned within 30 days of delivery for a refund to the original payment method. Email hello@tomostoneware.com with your order number to start a return. If anything arrives damaged, send a photo of the damage and we will replace it.

Everything the ferment needs
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Everything the ferment needs

Wide water-lock rim

A channel of water around the mouth seals the crock without a clamp or an airlock. Carbon dioxide escapes as the ferment works; air never gets back in. Extra-wide, so it needs topping up far less often.

Two sizes

3 litres holds two to three cabbages — about five mason jars of sauerkraut. 7 litres takes five to seven, for roughly twelve. Both use the same seal and the same weights.

Half-moon ceramic weights

Two glazed weights sit on top of the vegetables and hold everything below the brine line. That is the whole trick: nothing above the brine, nothing to spoil.

Wooden tamper

For packing shredded cabbage down hard enough to drive out air pockets and draw the brine up over the top. Included with every crock.

Built to Last

Built to Last

Fired at 1280°C for extraordinary durability.

100% Food Safe

100% Food Safe

Lead-free reactive glazes, safe for every meal.

Ethically Made

Ethically Made

Small-batch production, with clay traced to its source.

Gift Wrapped

Gift Wrapped

Beautiful kraft paper packaging, ready to gift.

What our customers say

4.6 out of 5 from 597 Amazon ratings (see the listing)

4.7 Based on 125 verified reviews
5 star 100
4 star 17
3 star 8
2 star 0
1 star 0
80%of reviewers gave it five stars
★★★★★✓ Verified purchase

Beautiful and useful

Customer photo of the Fermentation Crock, 7L

I trino this pot is going to be part of my legacy to my daughter ;). It is a ver simple but useful mechanism and is very beautiful, even decorative. I make kimchi, chucrut, vinegars...

María José
★★★★★✓ Verified purchase

Defect found in interior

Customer photo of the Fermentation Crock, 7L

I love(d) this fermentation crock, it’s lightweight, the design is great for fermenting and it looks nice. I used it for sour pickles, that turned out awesome, then for sauerkraut with purple cabbages, that came out great also.The problem lies in the undetected flaw at the bottom of the crock. I wouldn’t have noticed it until I fermented purple cabbage, and the crack is stained. This wasn’t a cheap purchase and I’m disappointed in the quality. It’s past the 30 day return timeframe, Amazon was no help, I have written to TOMO, hoping for a replacement, or at least to find out if it’s safe to use with a porous surface defect that can harbor bacteria. Waiting for their response….Update 11/10/2025. : TOMO reached out to me and credited my purchase. I do think their product is a great design and easy to use, and comes with everything you need to make some great ferments. I just happened to get one with a flaw. They are hand made, and that can happen, also happens with machine made. Thanks TOMO for your customer care.

Amazon Customer
★★★★★✓ Verified purchase

Great little crock

Customer photo of the Fermentation Crock, 7L

Solid little crock. No odor from my first batch of fermented cabbage. Holds 2 average heads

Michael Huber
★★★★★✓ Verified purchase

Kraut in the making!

Customer photo of the Fermentation Crock, 7L

Very nice crock! It holds A LOT of cabbage!

Patti T
★★★★★✓ Verified purchase

Superb and Surprising Quality

Customer photo of the Fermentation Crock, 7L

Arrived heavily styrofoamed. But even without, I don’t see this thing easily breaking unless you make an effort. Weighted, solid, gorgeous and I just harvested my Gardyn and took all my cabbages, kale, kale lucinato, mustard greens, spinach and tatsoi; put in some juniper berries and peppercorns and coarse gris salt- then added dill and cilantro. It smellls amazing. I’m so impressed with the glazed weights because now I don’t have to be inventive with past failed attempts at keeping the veggies below the brine. I thought a 3L to make pine wine, something I had from the Black Forest of Germany. The 3L is equally incredible. Spend your money on this and trust the purchase. Then, enjoy your food!

DDMDO
★★★★★✓ Verified purchase

Already well loved

Customer photo of the Fermentation Crock, 7L

Bought for hubby and he is thoroughly enjoying it. He just made his first batch of wine and is finishing off the clarifying steps in jars.This crock holds so much and has a nice wide mouth for filling. It came in flawless and has more than lived up to expectation. For the quality and size, the price really wasn't that bad.

LC
★★★★★

Stylish and functional

Customer photo of the Fermentation Crock, 7L

A modern take on classic. It will be useful in the summer - right now I am doing small batches in the mason jars as it is the two of us and you can get a better idea of size.

Helena
★★★★★✓ Verified purchase

Gets down to business

Customer photo of the Fermentation Crock, 7L

Super easy to use… set it then forget it!!

Doug
★★★★★✓ Verified purchase

Size quality and looks great

Customer photo of the Fermentation Crock, 7L

Perfect size for the do it yourselfer sauerkraut maker. Currently fermenting 15 pounds of cabbage. The weights and the water while are perfect additions to the product. It is also A sharp addition to any country kitchen.

Paula
★★★★★✓ Verified purchase

My first sauerkraut ferment in it

Customer photo of the Fermentation Crock, 7L

A week into ferment,

wayne malmquist
★★★★★✓ Verified purchase

Bigger Than You Think

Customer photo of the Fermentation Crock, 7L

That cabbage from our garden weighed 6 pounds and by the time it was cut up, salted and packed into the crock, it was just half full. So, in about 6 weeks, we will pack about 6 quarts, water bath 4 of them for stuffed cabbage and keep the other two jars in the fridge for some awesome probiotics. Also, I love having such a lovely crock sitting on my counter.

Catherine G Cyko
★★★★☆

TOMO Fermentation Crock 3L

Customer photo of the Fermentation Crock, 7L

Not bad - first batch on Pickles going now - the opening is tad small ( hard to put the weight stones )but works - sadly 3L fits only 8 large Cucumbers - i think gonna get the larger one too

M j.
★★★★★✓ Verified purchase

Fresh and fermented is best

This works perfectly. It takes up little space and it is very efficient in fermenting pickles and peppers. All done fresh with no vinegar or other additives and they are the best I’ve ever ate. When I get done either ransom and vacuum seal them, put them in the fridge or just fill a jar and put that in the fridge with the existing brain.. just like my grandmother taught me when I was a little boy! This method saves all the food value that heat removes in canning. 5 to 7 day process or longer if you want more sour flavor..

dawgfather123
★★★★★✓ Verified purchase

Been fermenting for decades - this is my favorite crock

Over the years, I have tried many styles and methods of fermenting. The WATERLOCK SEAL works best. It keeps light and oxygen out so you can ferment without mold forming provided you keep about 2 inces of liquid over the top of the cukes, cabbage, or kimchi. However, the problem with many of the WATERLOCK SEAL crocks is they are too big and heavy making the job difficult, especially when cleaning them after fermentation is done. It strains your back and arms making you want to throw it out instead of clean it. These TOMO crocks solve that problem. They are solidly built but very light weight making them easy to use and clean. I absolutely love these and have gotten rid of all my other crocks. I bought both sizes for smakll and larger batches depending on what I am fermenting. These are a real joy to use. I could not be happier.

SteveG
★★★★★✓ Verified purchase

Beautiful

It is beautiful, can’t wait to use it! It was packed very well.

Liz D
★★★★★✓ Verified purchase

Very Good crock

I didn't manage to make good sauerkraut, so I gave it to a friend and he regularly use it and he says it is fantastic. From time to time he gives me sauerkraut he makes and it is very good. The secret - waits at least 5 weeks. Apparently, I didn't wait long enough.

Amazon Customer