阿禾又闻到泡菜的酸香。看不见的小生命，怎样改变食物？Ahe notices the sour aroma of fermented vegetables. How do invisible organisms transform food?
第 1 步：让微生物参与制作Step 1: Microbes join food production
发酵食品利用微生物的活动。Fermented foods depend on microbial activity.
不同菌种会转化食物中的成分。乳酸菌可使某些蔬菜变酸。酵母能让面团产生气泡。不是所有发酵都产生酒精。Different organisms transform components in food. Lactic acid bacteria can acidify some vegetables, while yeasts create gas in dough. Not every fermentation produces alcohol.
第 2 步：环境影响谁能生长Step 2: Conditions shape growth
温度、盐度和时间会影响过程。Temperature, salt concentration and time influence the process.
传统经验常包含这些条件。酸味不自动代表安全。科学理解不能把任何变酸食物都叫成功发酵。Traditional knowledge often includes managing these conditions. Sourness alone does not establish safety. A scientific explanation should not call every soured food a successful fermentation.
第 3 步：保存食物，也分享劳动Step 3: Sharing food and work
韩国的越冬泡菜制作称为Kimjang。Kimjang in Korea includes making and sharing kimchi for the winter.
它包含制作、分享与互助。发酵既是食物变化，也是社会实践。阿禾记录社区协作，不照示意图自行试做。It combines practical work with cooperation. Fermentation is both a food transformation and a social practice. Ahe documents the collaboration; the diagram is not a home-preservation recipe.
🎮 记录一项发酵研究🎮 Record a fermentation study
把四张过程卡按本页示意顺序排列。点击上移、下移，再检查。它是教学模型，并非所有地区的唯一路径。Arrange four process cards in the illustrated order using the up and down buttons, then check. This is a teaching model, not the only path in every community.
一句话记住它：不同微生物带来不同转化。Remember: Different microbes produce different changes.
不同微生物带来不同转化。Different microbes produce different changes.发酵是否安全不能只凭酸味。Sourness alone cannot establish safety.传统发酵常伴随社区协作。Fermentation traditions often involve cooperation.
依据上述公开资料编写 · AI 辅助制作 · 发现问题欢迎指正，帮这片叶子长得更好。Based on the public sources above · AI-assisted production · Spotted a problem? Tell us — help this leaf grow.
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