Hub 04 · Fermenting Vegetables
Best kimchi containers
Kimchi shrinks as it ferments, and whatever sits above the brine is where it goes wrong. Every container here is judged on how well it solves that one problem.
We earn a commission if you buy through our links, at no extra cost to you. We have not tested this equipment. Here is what we did instead.
Quick picks
Tap a row for the full write-up · Prices open on Amazon
| # | Product | Best for | Price |
|---|---|---|---|
| 01 | E-Jen Premium Kimchi Container with inner press lid The container that solves the actual kimchi problem: an adjustable inner lid you push down onto the surface, so the vegetables stay under their own brine as the batch shrinks. | Kimchi, done properly | |
| 02 | Lock & Lock Breathing STS Kimchi Container Stainless steel with a one-way valve in the lid that vents fermentation gas without letting air back in. | No plastic, no staining | |
| 03 | Kilner Fermentation Set, 3 L A 3-liter glass jar sold with the two parts people forget: a silicone lid with an airlock, and two ceramic weights. | One box, nothing missing | |
| 04 | Wide-mouth quart mason jar A quart wide-mouth mason jar costs a few dollars, holds a normal-sized starter or a one-quart batch of vegetables with room to spare, and takes every lid, weight and airlock in the category. | The cheapest jar that works | |
| 05 | Ohio Stoneware fermentation crock A water-sealed stoneware crock with stone weights, made in the United States and sold in sizes from a few liters upward. | A first real crock |
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Kimchi is not sauerkraut in a different jar. It is packed wetter, it is usually made in larger quantity, it goes into a refrigerator part-way through rather than staying on a counter, and it is bright orange with chili paste that stains everything it touches. Those four facts are why a category of purpose-built containers exists at all.
The picks above are ordered for someone making their first or second batch at home, which is a different order from largest to smallest. The container that solves the actual failure mode comes first.
What a kimchi container actually has to do
Five things, and most containers sold as “kimchi containers” do only two of them:
- Keep the vegetables under the brine as the batch shrinks. This is the whole job. Cabbage collapses over the first few days, the level drops, and anything left standing in air is where mold appears.
- Let carbon dioxide out. An active ferment produces gas. A genuinely sealed box either bulges or vents at the seal, usually onto a fridge shelf.
- Fit a refrigerator. Kimchi spends most of its life cold. A round jar wastes a shelf; a rectangular container does not.
- Survive chili paste. Gochugaru stains porous plastic and the aroma outlives the batch. Some materials shrug this off and some do not.
- Be the right size. One napa cabbage salts down to roughly two to three quarts of finished kimchi. A five-liter container for that is mostly air, and air is the problem.
Press lid, one-way valve, or airlock
Three different mechanisms show up in this category and they are not interchangeable:
- A press lid is an inner lid you push down onto the surface of the kimchi. It follows the batch down as it shrinks, so submersion is maintained without you adding brine or a weight. This is the mechanism the Korean containers are built around, and it is the one that matches how kimchi actually behaves.
- A one-way valve lets fermentation gas escape without letting air back in. It solves the pressure problem completely and the submersion problem not at all.
- An airlock — the water-filled bubbler on a jar lid — does the same job as a valve, more visibly and more fussily. It suits glass jars and vegetable ferments generally. We compare the lid types in best fermentation lids for mason jars.
The best containers combine a press with a gas route. The worst combine neither, which is most of what a marketplace search returns.
What size to buy
Start smaller than you think. A single napa cabbage, salted and drained, packs down to something on the order of two to three quarts. A 0.4 gallon (1.7 L) container takes that comfortably; a 1.3 gallon (5.2 L) one is a two-cabbage batch and starts to be a serious quantity of kimchi to eat before it turns sharply sour.
The size mistake runs one way. A container too large for its contents leaves a large headspace of air above the brine, which is exactly the condition the press lid exists to prevent. A container slightly too small just means a second jar.
The fridge stage changes the calculation
Most home kimchi ferments at room temperature for a day or three and then goes cold, where it keeps fermenting slowly for weeks or months. That long cold phase is why fridge fit, stackability and a lid that does not leak matter more here than they do for a counter-top kraut.
It is also why the stainless option earns its place. A container that spends three months in a fridge with chili paste in it is a container that will smell of chili paste forever if it is made of the wrong plastic.
If you are only trying it once
Do not buy a container. Make one quart in a wide-mouth mason jar with a silicone airlock lid and a glass weight — the same rig that makes sauerkraut, and the method is nearly identical to sauerkraut in a mason jar. If you make it twice more, then buy the container with the press lid, and buy it in the size that matches one cabbage.
The one thing not to improvise is submersion. Whatever vessel you use, the vegetables go under the brine and stay there — the safety reasoning is set out in is fermenting vegetables safe.
Every pick, in order
The full write-ups
Pick 01 · Kimchi, done properly
E-Jen Premium Kimchi Container with inner press lid
E-Jen / Crazy Korean Cooking
The container that solves the actual kimchi problem: an adjustable inner lid you push down onto the surface, so the vegetables stay under their own brine as the batch shrinks. A valve on the inner lid lets fermentation gas out. Nothing you improvise does this as well.
Material
Polypropylene, mixed with 7-10% natural clay in the sandy brown finish
Sizes
Sold from 0.4 gal / 1.7 L up to 5.8 gal / 22 L
Inner lid
Adjustable press with a gas-release valve
Care
Dishwasher, refrigerator and freezer safe; rated -22F to 284F
Specs compiled from: Manufacturer product listing and product name
What is good
- The press lid keeps the surface submerged all the way down the batch, which is the whole job
- Rectangular, so it uses a fridge shelf far better than a round jar of the same volume
- Sized sensibly for real kimchi batches rather than for a quart of test cabbage
What is not
- Opaque -- you cannot watch the ferment through the wall the way you can in glass
- Plastic will eventually stain and hold chili aroma; that is the trade for the shape
- The smallest size is still bigger than a first, cautious batch needs
Pick 02 · No plastic, no staining
Lock & Lock Breathing STS Kimchi Container
Lock & Lock
Stainless steel with a one-way valve in the lid that vents fermentation gas without letting air back in. It will not stain and it will not hold the smell of last month's batch, which is the recurring complaint about every plastic container in this category.
Material
POSCO STS304 stainless steel body; silicone and PP lid
Valve
Patented one-way valve: releases internal gas, blocks outside air
Sizes
Eight square and rectangular sizes, 2.8 L to 9.4 L
Seal
Silicone gasket with clip-type locking wings
Specs compiled from: Manufacturer product listing and product name
What is good
- Stainless does not stain, warp or keep the aroma of the last ferment
- The valve does the burping, so a sealed container is not a pressure risk
- Clip locks and a gasket make it genuinely leak-resistant on a tilted fridge shelf
What is not
- No press lid -- you still need to keep the vegetables under the brine yourself
- Opaque, and steel hides the surface completely
- Costs noticeably more than the plastic containers it competes with
Pick 03 · One box, nothing missing
Kilner Fermentation Set, 3 L
Kilner
A 3-liter glass jar sold with the two parts people forget: a silicone lid with an airlock, and two ceramic weights. It is the only jar on this page that arrives ready to ferment, which is worth something when the alternative is three separate orders.
Capacity
3 L / 3,000 ml
Included
Jar, silicone airlock lid, 2 ceramic weights, recipe booklet
Airlock
Lets fermentation gas out without letting air in
Care
Jar, lid, weights and airlock all dishwasher safe, per the manufacturer
Specs compiled from: Manufacturer product listing and product name
What is good
- Complete out of the box -- jar, airlock and weights are matched to each other
- 3 liters is a sensible single-batch size for a household, not a catering crock
- Ceramic weights are heavy enough to hold a packed kraut down without a jar-mouth lip
What is not
- Costs several times what a mason jar plus a silicone airlock lid costs
- One jar. If you want a second ferment going you are buying the whole set again
- The proprietary lid fits Kilner's jar, not your mason jars
Pick 04 · The cheapest jar that works
Wide-mouth quart mason jar
Ball, Kerr and equivalents
A quart wide-mouth mason jar costs a few dollars, holds a normal-sized starter or a one-quart batch of vegetables with room to spare, and takes every lid, weight and airlock in the category. There is no functional reason to spend more.
Material
Glass
Capacity
1 quart / 32 oz
Mouth
Wide mouth (about 86 mm outer thread)
Lid
Two-piece metal lid; use it loose, never sealed
Specs compiled from: Manufacturer product listing and product name
What is good
- The cheapest jar in the category, sold everywhere
- Wide mouth fits every accessory made for fermentation
- Buy four and you can keep a starter, a discard jar and a ferment going at once
What is not
- A slight shoulder taper makes the very top of the rise harder to read
- The metal lid rusts if you seal it and forget it
- Plain -- this is a tool, not an object
Pick 05 · A first real crock
Ohio Stoneware fermentation crock
Ohio Stoneware
A water-sealed stoneware crock with stone weights, made in the United States and sold in sizes from a few liters upward. The water channel is the whole mechanism: fill it, and gas leaves while nothing gets in.
Material
Glazed stoneware
Seal
Water channel around the rim; lid sits in the water
Weights
Stone weights, usually two half-moons
Sizes
Sold in a range; check the listed capacity
Specs compiled from: Manufacturer product listing and product name
What is good
- The water seal handles the entire airlock problem with no valve to fail
- Stoneware holds temperature steadily, which a glass jar does not
- Stone weights come sized to the crock, unlike generic glass discs
What is not
- The water channel must be topped up or the seal breaks
- Opaque -- you cannot see what is happening inside
- Heavy, expensive and awkward to store between batches
How we picked
We have not tested any of this equipment. What we did instead: compiled the published specifications from each manufacturer’s own listing, checked them against the task a beginner is actually trying to do, read the care instructions, and named the thing we would skip. Where a pick is a product type rather than a brand, it is because the category is sold mostly unbranded and the type is the real decision.
Frequently asked
Questions
+Why is my kimchi container bulging?
Because it is fermenting and the gas has nowhere to go. A bulging sealed container is working, not spoiling, but it will eventually vent through the gasket onto a shelf. Burp it daily, or move to a container with a one-way valve or an airlock lid.
+Can I ferment kimchi in a mason jar?
Yes, and for a first batch you should. A wide-mouth quart jar with an airlock lid and a weight handles about one quart of kimchi. The limits are volume and shape, not performance.
+Do I need a special kimchi container?
No, but the press lid is a genuine improvement rather than a gimmick. It keeps the surface submerged as the batch collapses, which is the failure mode that ruins home kimchi. Everything else in the category is convenience.
+Is plastic or stainless steel better for kimchi?
Stainless will not stain or hold the aroma, and it costs more. Plastic containers are where the press-lid designs live, which is the more useful feature. If you make kimchi often and hate the residual smell, buy stainless; otherwise buy the press.
+How long does kimchi ferment before it goes in the fridge?
Commonly one to three days at room temperature, judged by taste and by visible bubbling rather than by the clock, then cold storage where it keeps developing for weeks. Warm kitchens move faster; cold ones take longer.
Sources
Where the facts on this page came from
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