What is ricotta cheese made from?

Ricotta cheese is traditionally made from the whey that is a byproduct of producing other cheeses, particularly from cow, sheep, or goat's milk. During the cheese-making process, milk is curdled and separated into curds and whey. The curds are used to make cheese, while the remaining whey is often discarded. However, in the case of ricotta, this whey is further processed. When this leftover whey is heated, some proteins coagulate, forming the soft and creamy texture that ricotta is known for.

This method of utilizing whey distinguishes ricotta from other cheeses that are typically made directly from whole milk or cream. While other options like whole milk, cream, or skimmed milk can certainly be used in some variations of ricotta or similar cheeses, the authentic and traditional process relies specifically on whey, making it the defining characteristic of ricotta cheese production.