r/fermentation↗
All things fermented and cultured: Sauerkraut, kefir, yogurt, beer, wine, vinegar, cheese, miso, etc
Welcome to r/fermentation! This community is devoted to the craft, science, and culture of fermentation. From sauerkraut and sourdough to kombucha, kimchi, yogurt, and beyond, we explore the traditions and innovations that bring microbes, time, and ingredients together. Our aim is to promote safe, accurate, and inspiring fermentation practices while fostering curiosity, creativity, and shared knowledge for beginners and experts alike.
329k subscribers535 posts / mo in Sep 2026 (incl. ~1% by known bots)433 authors / mosince 2009
r/fermentation has 329k members (+16% over the last 12 months). It gets about 535 posts a month from 433 people. Top topics: Fermented Foods, Sauerkraut Fermentation and Fermented Peppers.
When to post on r/fermentation
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How r/fermentation has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/fermentation
Top topics
Share of the subreddit's posts
- Fermented Foods12%
- Sauerkraut Fermentation6.8%
- Fermented Peppers5.8%
- Fermented Hot Sauces4.7%
- Homemade Kimchi3.8%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Wolfram
- Substack
- CDC
- Simple Page
- ScienceDirect
Everything else about r/fermentation
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research