Ricotta
What it is
Ricotta is, strictly speaking, not a cheese but a whey product — its name means "recooked," and it is made by reheating the leftover whey from cheesemaking to capture the proteins the first cheese left behind. Light, fresh, and faintly sweet, with a delicate grainy texture, it is one of the great thrift ingredients of Italian cooking.
How it's made
When cheese is made, the curds are removed and a large volume of whey remains, still carrying soluble proteins (albumin and globulin) that rennet did not coagulate. Ricotta is made by reheating that whey (often with a little fresh milk and an acid added) until those remaining proteins precipitate and float as soft, fine curds, which are skimmed off and drained. It is the second harvest from a single batch of milk — a model of using everything.
Flavor profile
Mild, fresh, faintly sweet and milky, with a soft, moist, lightly grainy texture. Delicate and clean rather than tangy. Sheep's-milk ricotta is richer and more savory than cow's.
Culinary uses
Layered into lasagna and baked pasta, filled into cannoli and sfogliatelle, folded into ricotta gnocchi and cheesecakes, spread on toast, and eaten fresh with honey or salt. Its moisture and mildness make it a filler and binder; it does not melt smoothly but softens and holds.
Regional variations
Cow's-milk ricotta is the everyday form; sheep's-milk ricotta (central and southern Italy) is richer. Aged and specialty forms abound: ricotta salata (salted and dried, for grating, as over pasta alla Norma), ricotta affumicata (smoked), and ricotta infornata (baked). Each is a different ingredient entirely.
Cultural & historical context
Ricotta embodies the Italian (and broadly peasant-European) ethic of waste-nothing dairying — turning the whey byproduct of cheesemaking into a second food. It is woven through Italian regional cooking from Sicilian cannoli to Roman pasta. Why substitution fails: cottage cheese is wetter, lumpier, and tangier; quark is smoother and differently textured. In a cannolo or a delicate ricotta gnocchi, the specific fine grain and gentle sweetness of true ricotta are what the dish is built on.
Reference notes
Tags: `whey-cheese`, `recooked`, `fresh`, `mild`, `italian`, `thrift`. Related ingredients: chhena, quark, mascarpone, ricotta salata. Related cuisines: Italian, Sicilian, Roman. Suggested links: Mascarpone, Chhena, Cannoli, Lasagna, Whey (reference).