Microbes come whether invited or not
All plant and animal foods already carry elaborate microbial communities, so microbial transformation is all but inevitable. The real choice is which transformation to encourage, not whether one happens.

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All plant and animal foods already carry elaborate microbial communities, so microbial transformation is all but inevitable. The real choice is which transformation to encourage, not whether one happens.
A practice can exist everywhere and still lose its local lineages. Colonization wiped out whole peoples and pushed others onto unfamiliar landscapes, cutting the chain through which specific ferments were passed down.
Fermentation preserves food by letting certain microbes grow on purpose. Their by-products, such as acids and alcohol, stop pathogens from taking hold. That is how perishable cabbage, milk, meat and grapes become long-lasting sauerkraut, cheese, salami and wine.
Like any part of culture, fermentation practices stay alive only while people keep making them. Preserving them means practicing them, documenting them and sharing them, not just admiring them.
Traditional ferments were made by feel, taste and memory, with whatever ingredients were plentiful. Learning the underlying parameters, such as salt concentrations and variations on a style, lets people create their own recipes instead of following fixed ones.
Fermenting your own food is a sensory protest against flavors and food experiences becoming identical everywhere. Even a task as ordinary as making sauerkraut becomes a way of engaging with the world.
An economy built on commodities prefers people to be passive buyers. Making unique products that express yourself and your place reclaims the role of creator from that of consumer.
People in every part of the world ferment, and they use it in strikingly similar ways. It is a practical necessity that keeps recurring across cultures, not a regional quirk.
Instead of trusting a recipe to guarantee safety, fermenters learn what a healthy ferment looks, smells and tastes like. Knowing how the process works lets you judge with all your senses whether the crock is going right or wrong.
Tending bacterial and fungal communities can build an awareness that humans are coevolutionary beings within a larger web of life. Organisms themselves can be seen as communities built from microorganisms.