Ingredient · Ingredients

Milk

A secreted food whose fat, casein, whey proteins, and lactose become cheese, yogurt, and much of dairy cooking once they are heated or fermented.

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Appears in Understand cheese · Next: Fermentation

Milk is not generic white liquid. Species (cow, goat, sheep), breed, feed, season, and fat content change what Cheese cultures and a kettle can do with it. It is the shared substance behind dairy’s many textures and flavors.

FAO’s cheese notes split milk protein: casein about 75–80% of total protein, whey proteins about 20–25%. Cheesemaking coagulates casein; most whey protein leaves with the whey 1. Fat is an emulsion that gets trapped in the curd. Lactose is the sugar Fermentation consumes in the vat. Heat history (pasteurization, cold storage) changes how easily the milk will set — a handling fact on Coagulation.

U.S. cheddar identity allows milk, nonfat milk, or cream as dairy ingredients, and if they are not pasteurized the cheese must be cured at not less than 35 °F for at least 60 days 2. That is a standardized-cheese rule, not a home-cheesemaking license.

Bay Area milk is geography. Point Reyes Farmstead Cheese Company began as a Tomales Bay dairy shipping milk, then made cheese from the herd 3. Cowgirl Creamery presents North Bay cheesemaking as the public face of similar agriculture 4. The craft is Cheese.

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Cited in this article

  • Small-Scale Dairy Farming Manual — Technology Unit 10.3 Small Scale Cheese Making — Food and Agriculture Organization of the United Nations — Technical notes on coagulation (acid vs enzyme), casein vs whey proteins, syneresis after cutting, salting, and ripening. Training-course material, not a U.S. safety regulation.
  • 21 CFR § 133.113 — Cheddar cheese — U.S. Food and Drug Administration (text via Cornell LII) — Example standardized cheese: culture, clotting enzymes, cutting/stirring/heating to separate whey, salting and pressing. If dairy ingredients are not pasteurized, the cheese is cured at not less than 35 °F for at least 60 days.
  • History — Point Reyes Farmstead Cheese Company — Producer history: Giacomini dairy on Tomales Bay (farm purchased 1959); Original Blue launched August 2000; The Fork (2010); Petaluma creamery (2018) with Original Blue remaining at the Point Reyes farm.
  • Cowgirl Creamery — Official producer site. The public homepage presents the creamery as a North Bay / Sonoma County cheesemaker.

Updated 2026-08-25. gg:ingredient:milk · CC BY 4.0

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