Red meat under a thick cap of fat, cooked like a steak rather than like poultry — medium-rare at 130-135°F. Getting it right is entirely about rendering that fat cap, which means starting in a cold pan and being far more patient than feels reasonable.
Unlike chicken, duck actually flies, so the breast is a working muscle: dark, dense, high in myoglobin and closer to beef than to poultry in both colour and behaviour. Over it sits a fat layer up to half an inch thick, separated from the muscle by a thin membrane, with skin on top. There's essentially no intramuscular fat — all of it is in that cap. Pekin breasts run six to eight ounces and are the common supermarket duck; magret, from the Moulard ducks raised for foie gras, are twice the size and much richer. The fat cap needs scoring in a crosshatch through the fat but not into the meat, which opens channels for the fat to escape.
The problem is that the fat cap and the muscle want opposite things. Rendering fat requires sustained moderate heat and time — the fat has to melt and flow out, which takes ten to fifteen minutes — while the muscle beneath is thin and reaches medium-rare in a few minutes. Starting in a cold pan solves it: as the pan heats slowly, the fat renders and drains before the muscle has climbed much at all, and the meat effectively cooks in a bath of its own rendering fat at a controlled temperature. Drop a duck breast into a hot pan and the skin seizes and browns while the fat underneath stays solid, giving a flabby layer of unrendered fat between crisp skin and cooked meat.
The only reliable way to fully render a thick fat cap without overcooking the thin muscle beneath it.
HowScore the fat in a crosshatch, salt, and place fat-side down in a cold dry pan. Turn the heat to medium-low. Twelve to eighteen minutes, pouring off fat as it accumulates, until the cap is thin, golden and crisp. Flip for ninety seconds to two minutes. Rest five to ten.
For thicker magret breasts, the stovetop render alone may not bring the centre to temperature without over-browning the skin.
HowRender as above, flip, then into a 400°F oven for three to five minutes to 130°F. Rest ten minutes before slicing.
Separates the two jobs completely — the bath sets the doneness precisely, then a hot pan handles only the skin.
How130-135°F for one to two hours, then dried thoroughly and placed fat-side down in a hot dry pan for three to four minutes to render and crisp. Slightly less fat renders this way, so score deeply first.
Rendering fat over direct flame flares violently, so the breast starts away from the fire and finishes over it briefly.
HowFat side up over indirect heat at 350°F for eight to ten minutes, then fat side down over direct for two to three minutes, watching for flare-ups.
Duck is poultry taxonomically and red meat in every way that matters at the stove. Cooking a breast to 165°F takes a dense, dark, iron-rich muscle with no intramuscular fat well past the point where its fibers hold water, and produces something grey, tight and livery — which is where the belief that people dislike duck usually comes from. It belongs at 130-135°F, medium-rare, the same as a steak. Whole ducks and duck legs are different: those benefit from long cooking to 175°F+ because of their connective tissue. The other half of the error is the hot pan. A hot start seizes the skin before the fat beneath can melt, leaving a thick unrendered layer that reads as greasy no matter how crisp the surface looks.
Pekin (also sold as Long Island) breasts are six to eight ounces, milder, and what most shops carry — one per person. Moulard magret is twelve to sixteen ounces, much richer and deeper in flavour, and serves two. Look for a thick, unbroken white fat cap and dry-looking skin; any moisture in the package works against rendering. Frozen is generally fine, but thaw fully and dry the skin thoroughly, ideally uncovered in the fridge overnight. Ask whether the breast has been scored — most aren't, and it's easy to do at home with a sharp knife at a shallow angle. The rendered fat is a valuable by-product; buy accordingly and keep a jar for it.
Doneness: 130-135°F for medium-rare, pulled at about 128°F to allow for carryover. Rest five to ten minutes and slice thin across the grain. Duck legs are a different cut entirely and want 175-185°F.
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It's the standard preparation in every cuisine that takes duck seriously, and the risk profile is closer to beef than to chicken. Duck carries a much lower incidence of salmonella than chicken, the muscle is intact so contamination is a surface matter, and the surface is thoroughly seared. Whole ducks and ground duck are different, as is anything served to someone immunocompromised. But a seared whole-muscle breast at 130-135°F is a normal, widely accepted preparation.
A great deal — often a quarter to a third of a cup from a single magret. The cap should go from half an inch thick to a thin crisp layer maybe an eighth of an inch deep. If you're pouring off very little, the pan was too hot at the start and the skin sealed before the fat could escape, or the scoring wasn't deep enough. Deep enough means through the fat with the knife just short of the meat.
Keep every drop. Strained into a jar it lasts months in the fridge and is arguably the best roasting fat there is — potatoes cooked in duck fat are a different food. It's also what you need for confit if you go on to cook the legs. Throwing it out is throwing out one of the main reasons to buy duck.