Preserve · buyer's guide
Best Fermenting Crock for Vegetables: Crock vs Jar Kit (2026)
Fermenting turns cabbage into sauerkraut and a glut of vegetables into tangy, gut-friendly food, with nothing but salt and time. No canner, no heat. The one rule that keeps it safe is simple: keep the vegetables under the brine. Here is the gear that makes that easy.
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How we picked
Good fermentation gear does one thing above all: it keeps the vegetables submerged under the salty brine, where they ferment safely and away from air. Anything that floats up and touches air can grow mold, so weights and a water seal matter most.
Beyond that, we looked at batch size and ease. Use about 1 to 3 tablespoons of salt per quart of vegetables and ferment at room temperature, around 60 to 70 F, for one to four weeks.
Our picks
- Best for big batches
Stoneware Fermentation Crock
Lehman's
- A water-seal crock with heavy stone weights keeps everything submerged and lets gas escape without letting air in. Perfect for a big batch of sauerkraut or kimchi.
- Built to last for decades; many are handed down.
- Downside: it is heavy and the priciest option, so it is overkill if you only ferment a jar at a time.
- Best for beginners and small batches
Mason Jar Fermentation Kit
Best starter
- Airlock lids and glass weights turn jars you already own into small fermenters. Ferment a quart of vegetables at a time and learn the ropes cheaply.
- Easy to store and to scale up by just using more jars.
- Downside: small batches mean more refills, and the silicone airlocks wear out and need replacing over time.
We only list gear we would use ourselves. When buying links are added we may earn a small commission, at no extra cost to you.
Questions, answered straight
Yes, when you keep the vegetables under the brine and use enough salt, about 1 to 3 tablespoons per quart. The salt and the lack of air let good bacteria take over. If anything smells rotten or grows fuzzy mold, throw it out.
Cabbage (sauerkraut and kimchi), carrots, beans, radishes, peppers, and cucumbers all ferment well. Firm vegetables hold up best.
Usually 1 to 4 weeks at room temperature, around 60 to 70 F. Taste as you go and move it to the fridge when it is as tangy as you like, which slows it down.
No. A mason jar kit with an airlock lid and a weight is plenty for a beginner. Step up to a stoneware crock once you ferment big batches.
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