To roast the duck legs, first pat them dry and cut off any pieces that may be hanging loose. Meanwhile, preheat the oven to 320°F (160°C) convection or 350°F (180°C) regular heat.

Season the legs with salt and pepper.

Heat an oven-safe dish until hot, then add the fat. Sear the duck legs skin-side down over high heat for about 6 minutes.

Using a spatula, turn the legs over. Add the garlic and thyme.

Put the dish into the preheated oven and roast for an hour and a half.