A French preservation technique turned luxury dish — duck legs cured in salt and herbs, then slow-cooked in their own fat until silky-tender, with skin crisped before serving.
Confit as preservation
Confit (confire — to preserve) was developed in Gascony (southwest France) as a method of preserving meat before refrigeration. Duck or goose legs are heavily salted and left to cure for 24–48 hours, drawing out moisture. They’re then submerged in their own fat and cooked very slowly (76–82°C) for several hours. The fat seals the cooked meat from air, allowing it to keep for weeks or months in a cool cellar.
The cooking science
The slow, low-temperature cook breaks down the collagen in the legs (thighs and drumsticks are high in connective tissue) into gelatin, creating the characteristic silky, fall-off-the-bone texture. The meat never reaches temperatures that would dry it out — unlike roasting, which achieves crisp skin by applying high heat throughout.
Finishing
Before serving, the legs are removed from their fat and placed skin-side down in a very hot dry pan or under a grill. Within 3–5 minutes, the skin renders and crisps. The contrast between the crackling skin and the yielding meat underneath is the dish’s defining character.
Cassoulet
Duck confit is the essential ingredient in cassoulet — the slow-cooked white bean and meat casserole of Languedoc. The confit enriches the beans over the long cooking time with its rendered fat and concentrated duck flavour.