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Traditional Agri-food Product, on the national list of the Italian Ministry of Agriculture
Ricotta (Italian: [riˈkɔtta]) is an Italian whey cheese made from sheep, cow, goat, or Italian water buffalo milk whey left over from the production of other cheeses. However, modern ricotta is often made from milk instead of whey. Like other whey cheeses, it is made by coagulating the proteins that remain after the casein has been used to make cheese, notably albumin and globulin.
Ricotta (lit. 'recooked' or 'refined') protein can be harvested if the whey is first allowed to become more acidic by additional fermentation (by letting it sit for 12–24 hours at room temperature). Then the acidified whey is heated to near boiling.
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Sources: eAmbrosia, the EU register of geographical indications (names, type, registration dates); the national list of Traditional Agri-food Products of the Italian Ministry of Agriculture, 11 March 2025 revision; Slow Food Foundation, Presidia in Sicily; texts and pictures from Wikipedia (CC BY-SA). Updated September 12, 2026.