Confit is one of the oldest preservation techniques in the French culinary repertoire — long before refrigeration, poultry legs were cured in salt, cooked in their own fat, and sealed away in crocks, where they kept for weeks or months in the cold of a cellar. The process, born of necessity, happens to produce something extraordinary: meat so tender it barely holds itself together, a skin that crisps into something shattering and golden, and a depth of flavor that slow-roasting in dry heat could never replicate.
Duck leg confit is one of those preparations that looks intimidating and is actually almost impossible to get wrong, provided you observe two rules: the salt cure is not optional, and the fat temperature must never boil. Everything else — timing, exact herbs, specific cuts — is flexible. But those two rules are absolute.
Ingredients
The science of confit
Confit works differently from braising or roasting. When submerged in fat kept below 90°C, the duck legs cook through gentle, consistent heat that slowly dissolves the collagen in the leg into gelatin, making the meat extraordinarily tender. Because the fat temperature never reaches boiling point, moisture loss is minimal — the meat essentially steams in its own juices inside the fat envelope. The result is simultaneously very tender and very moist, in a way that is unique to this technique.
The fat itself does not penetrate the meat significantly. Duck fat is the traditional choice because it has a neutral, slightly rich flavor and a high smoke point. Rendered pork lard, goose fat, or even a good olive oil can substitute in a pinch. The quantity matters — the legs must be fully submerged throughout cooking, with no exposed parts drying out.
The salt cure: 12 to 24 hours
Rub each duck leg generously with coarse salt on all surfaces, pressing it into the skin and the exposed flesh around the bone. Add smashed garlic cloves, fresh thyme sprigs, crumbled bay leaf, and cracked peppercorns. Place in a container just large enough to hold the legs, cover, and refrigerate. The minimum cure time is 12 hours, but 24 hours produces noticeably better results — the salt penetrates deeper, seasons the meat throughout rather than just on the surface, and draws out some moisture that concentrates the flavor during cooking.
Before cooking, rinse the salt off under cold running water. This step surprises people, but it is correct — you are removing the surface salt, not the flavor it has driven into the meat. Pat the legs absolutely dry. Surface moisture would lower the fat temperature when you add them to the pan.
Cook at low temperature
Melt the duck fat in a deep ovenproof pan over low heat. The fat should never bubble or shimmer visibly — this would mean it is too hot and you risk frying rather than confiting the duck. Add the duck legs skin-side up, ensuring they are completely submerged. The target temperature is between 82°C and 90°C.
The easiest method at home is the oven: set it to 90°C (fan-forced) or 100°C (conventional), and cook for 3 hours. Slide the pan in and forget it. The legs are done when the meat pulls easily from the bone and feels completely tender when pierced with a skewer. If there is any resistance, give it another 30 minutes.
The critical final step: crispy skin
Remove the legs from the fat, letting excess fat drain. Pat the skin completely dry with paper towels. Heat a heavy skillet — cast iron is ideal — over high heat until smoking. Add the legs skin-side down with no additional fat. Press them firmly with a spatula to ensure maximum skin contact with the pan. Cook for 4 to 5 minutes, resisting any urge to move them, until the skin is lacquered golden-brown and makes a crackling sound when tapped. Turn briefly to heat the flesh side, then serve immediately. This final sear is why confit is extraordinary — the contrast between yielding meat and shattering skin is impossible to achieve any other way.
Serving
Classic French accompaniments include Puy lentils with shallots and vinaigrette, sautéed potatoes cooked in the leftover duck fat (an absolute luxury), or a simple green salad with walnut oil dressing. The Gascon version is served with white beans. All are correct. Save every drop of cooking fat for roasting vegetables, frying eggs, or making the best sautéed potatoes of your life.
