Confit de Canard (Duck Confit)

Confit (from confire — to preserve) is a Gascon technique from southwestern France, the same region that produces foie gras. In the Gascon farmhouse kitchen, every part of the duck was preserved: the confit of the legs, the foie gras of the liver, the magret (the breast), the rillettes of the neck and other trim. The confit was stored submerged in its own fat in ceramic crocks for months — the fat's anaerobic environment preventing bacterial growth. Refrigeration has made the preservation function secondary to the flavour function.

The slow cooking of duck legs — seasoned and cured overnight in salt and aromatics, then submerged in their own rendered fat and cooked at a temperature barely above 82°C until the collagen in the connective tissue has transformed to gelatin and the meat pulls from the bone with the lightest resistance. Confit is one of the great French preservation techniques, but its purpose is not merely preservation: the slow, fat-surrounded cooking produces a texture — yielding but not falling apart, with the muscle fibres distinctly present yet without resistance — that no other method achieves with duck.

Duck confit's flavour is the product of two distinct processes: the overnight cure concentrates the leg's natural flavour through osmotic dehydration and introduces aromatic compounds from the herbs and pepper; the slow fat cooking converts the leg's considerable collagen into gelatin, which bastes the muscle fibres internally throughout the 3-hour cook. As Segnit notes, duck and orange (the classic accompaniment in duck à l'orange) is not mere convention — the duck's oleic fat (the primary fat of both duck fat and olive oil) carries aromatic esters from the orange zest with particular efficiency, and the orange's citric acid cuts through the fat's richness in a way that sweet accompaniments cannot.