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Kraut Source® Mason Jar Fermentation Top
Kraut Source® Mason Jar Fermentation Top
Kraut Source® Mason Jar Fermentation Top
Kraut Source® Mason Jar Fermentation Top

Kraut Source® Mason Jar Fermentation Top

Start fermenting today using jars you already own!


Kraut Source® is an all–stainless steel, mason jar fermentation top designed for making sauerkraut, kimchi, pickles, and other probiotic ferments in small batches easily and safely - and, it's...


• Dishwasher safe

• Non-reactive to salt and acid

• Durable and built to last


What’s Included 


• Stainless Steel Moat with Silicone Gasket

• Stainless Steel Press

• Stainless Steel Spring

• Stainless Steel Cap

• Replacement Silicone Gasket

• QR code video tutorial

 

Note: Kraut Source® requires a standard wide-mouth Mason jar and ring (86 mm opening).

First production run inventory is limited.

$39.00 Each

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The Original, All Stainless Steel, Mason Jar Fermentation System


The same trusted Kraut Source® design — now officially part of The Little Fermenter line of products.


Make homemade sauerkraut, kimchi, and probiotic vegetables with an easy-to-use, plastic-free, dishwasher-safe, fermentation top designed for wide-mouth Mason jars.


No more burping jars. No fragile airlocks. No plastic lids.

Start Fermenting Today!

Why Stainless Steel?

• No microplastics in your food

• Easy to clean / dishwasher safe

• No cracking airlocks

• No warping lids

• Designed to last a lifetime

Trusted by Professionals, Instructors & Home Fermenters

“An elegant, simple solution that creates the sealed, anaerobic environment necessary for successful fermentation.... Used in both our R&D lab and my home kitchen. Highly recommended."

David Ehreth, Founder and President of Sonoma Brinery

“With Kraut Source, I make my own ferments at a fraction of the cost — using fresh, organic, seasonal produce.... Accessible and approachable for both novice and accomplished cooks."

Karen Pavone, blogger/photographer of Farminsta's Feast

“It’s my go-to fermenting device — sturdy, durable, and not made of plastic that bends and cracks.... Beautiful enough to leave out on your counter."

Sean Timberlake, Punk Domestics

“I use Kraut Source in my fermentation classes — and my students never have issues with their ferments.... Beautiful, durable equipment that sets beginners up for success."

Stacey Clinesmith, Your Beeting Heart

A Message from Chef Karen

“When Kraut Source became unavailable, we received a flood of emails asking when it would return. Some people wanted another for themselves, while others were eager to try it after hearing from friends and family that Kraut Source made fermentation easy, safe, fun — and was free of plastic parts.


It became clear that Kraut Source had become an essential tool for those interested in “counter culture” — the kind that bubbles, tangs, and thrives right on your countertop.


We are delighted to bring Kraut Source back as part of The Little Fermenter family. Our motivation is simple: to enable everyone to make their own delicious, healthy fermented foods at home — so we can ferment a better world, together.”


Chef Karen Wang Diggs - Creator of Kraut Source®

Thank you to our Cultured Community for helping us bring back Kraut Source®!

Ready To Start Your First Ferment?

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First production run inventory is limited.

Buy Two - Get Free U.S. Shipping Plus Digital Recipe Book!