r/fermentation
All things fermented and cultured: Sauerkraut, kefir, yogurt, beer, wine, vinegar, cheese, miso, etc
Founded July 2009 · Public — anyone can post
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.
Members
328,506
329K
Online now
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not captured in the last snapshot
Posts per day
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no sample yet
Comments per post
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no sample yet
Growth · 7d
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not enough history yet
Growth · 30d
+1.2%
+3.9K members · ≈37d
Promo tolerance
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not assessed yet
Last post
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no sample yet
Distinct posters
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no sample yet
Tracking since Jul 30 · growth spans are the real distance between snapshots, not rounded windows. Posts/day is measured from the community’s own newest posts on Reddit, not from what Prowlo happens to crawl.
Member growth
Similar by content
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r/fermentation — frequently asked
How many members does r/fermentation have?
r/fermentation has 328,506 members as of our most recent crawl on Oct 19. Prowlo re-checks tracked communities on a rolling schedule, so this figure moves rather than sitting frozen at whatever it was when a scraper last ran.
Is r/fermentation growing?
Over the last ≈37 days r/fermentation changed by +1.2% — a gain of 3.9K members. We compare against the nearest snapshot we actually hold and state the real span rather than rounding it to a clean "30 days".
How active is r/fermentation?
We don't have a reliable posting-rate sample for r/fermentation yet. Subscriber count alone is a poor guide to whether a community is active, so treat this one as unverified until the next sample lands.
When was r/fermentation created?
r/fermentation was founded in July 2009 and is a public — anyone can post community. Age matters: an older community with steady growth has survived Reddit's moderation churn; a young one with a spike may not.
Can I promote my product in r/fermentation?
We don't have a promo-tolerance read for r/fermentation yet. Default to the safe approach: read the sidebar rules, contribute in threads where you gain nothing, and mention your product only when it is the honest answer to someone's question.
How do I monitor r/fermentation for mentions?
Hit Watch on this page. Prowlo starts crawling r/fermentation into your Dataset — every new post indexed and embedded, searchable semantically, queryable by your AI agent over MCP, and able to trigger keyword alerts in Slack. Prowlo is read-only; it never posts on your behalf.
Can my AI agent read r/fermentation's stats?
Yes. Everything on this page is one MCP tool call away: catalog_get_subreddit returns r/fermentation's members, growth, promo tolerance and similar communities as typed JSON — free, no credits. Connect your agent to api.prowlo.com/mcp and it can vet the community and start watching it in the same conversation.
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