The original all stainless steel small batch fermentation system designed for use with wide-mouth (86 mm) mason jars and rings.

Plastic Free!!! Dishwasher Safe!!!

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our patented design

Designed by Chef Karen Diggs, The Little Fermenter blends centuries-old fermentation wisdom with a clean, modern design. Inspired by traditional fermentation methods from Europe and Asia, it brings time-tested techniques into today’s kitchen—without the bulk, weight, or hassle of old-style crocks.

Thoughtfully engineered for small batches, The Little Fermenter makes it easy to create healthy, flavorful cultured foods at home. Our mission is simple: to revive the ancient craft of fermentation for the 21st century—with a fresh, modern twist.

How does it work?

The Little Fermenter® is a simple, elegantly designed fermentation system that fits securely onto either a standard wide-mouth mason jar (Kraut Source® – 86 mm opening) or a premium French-made wide-mouth glass jar from Le Parfait (ChouAmi® – 100 mm opening).

Designed for ease of use and reliability, it takes the guesswork out of fermentation—making it effortless to create small batches of sauerkraut, natural pickles, kimchi, and other lacto-fermented foods right at home.

No fuss. No bulky crocks, clumsy glass weights, or sketchy plastic components—just great ferments.

Convenient

Stylish

Durable

Food Safe

Plastic-Free

Find My Ferment Recipe

Kraut

Pickles

Condiments

Beverages