You don’t need a crock to start fermenting — a mason jar works fine for your first batch. But once you’re hooked, a dedicated fermentation crock makes bigger batches easier and takes the guesswork out of keeping everything submerged. Here’s what’s actually worth buying.

Do You Actually Need a Crock?

No — a wide-mouth mason jar and a fermentation weight handle small batches perfectly well (see our jars and weights guide). A crock is worth it once you’re making larger batches regularly, or if you like the traditional water-seal design that manages gas release for you automatically.

Best Overall: Humble House Sauerkrock

Humble House 1/2 Gallon Sauerkrock (paid link) is the pick we’d recommend to most beginners. It comes as a complete kit — crock, lid, ceramic weights and a wooden pounder — sized right for a first-time batch of sauerkraut or kimchi. The water-channel lid design acts as a built-in airlock, so gas escapes without you having to burp the jar.

• Complete kit — nothing extra to buy
• Water-seal lid manages fermentation gases automatically
• Good size for a first batch (holds a few pounds of vegetables)

Best for Bigger Batches: Ohio Stoneware 3-Gallon Crock

Once you’re fermenting regularly and want to make larger batches — enough sauerkraut to last months, not weeks — the Ohio Stoneware 3-gallon crock (paid link) is a solid, American-made option. It’s a traditional open crock (no built-in water seal), so you’ll want a plate or cloth cover, but the extra capacity is worth it if you’re fermenting for a whole household.

• Much larger capacity for serious batches
• American-made stoneware
• Heavy once full — pick a permanent spot for it

What to Look For

• Glazed weights are easier to clean and won’t absorb odors the way unglazed stone can.
• A water-seal lid is convenient but not essential — an open crock with a cloth cover works too, it just needs more attention.
• Size it to how much you actually eat — a huge crock sitting half-empty isn’t better than a small one used often.

FAQ

Is a crock better than a mason jar?

Not necessarily better — just suited to a different scale. Jars are perfect for small, frequent batches; crocks shine for larger volumes.

Can I use a crock for any ferment?

Yes — sauerkraut, kimchi, and pickles all work well in a crock. It’s less practical for liquid ferments like kombucha, where a jar is easier to manage.

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Related: Fermentation for Beginners · Sauerkraut Recipe