Best Fermentation Crocks for Home Fermenting (2026)

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A fermentation crock is a heavy stoneware vessel built for fermenting vegetables like sauerkraut and kimchi, using a water seal moat that lets gas escape while keeping air and contaminants out. The water channel around the rim is the clever part, since it forms a barrier without you having to burp the vessel or fuss with an airlock. Many crocks come with weights that hold the vegetables under the brine, which is exactly where they need to stay to ferment cleanly. Size and a well glazed, food safe interior are the main things to weigh up alongside the seal design. These crocks suit anyone drawn to fermented foods rather than drinks, from a first batch of kraut to a steady rotation of pickles and kimchi. They fit cooks who want a set and forget vessel for the whole ferment. Choose a size that matches how much you actually eat, since a huge crock is a lot to fill and store. Keep the water moat topped up and the vegetables under the brine, and a good crock turns out tangy, crunchy ferments for years.