Cut the end sections off and remove the thigh bones, rub the legs with salt and thyme and refrigerate for 4 hours.
Wash the legs in cold water and pat dry.
Place the legs in a baking dish and cover with melted duck fat.
Add 12 peppercorns, 2 thyme sprigs , 2 bay leaves , cover with a lid.
Cook in 160° C/ 320° F oven for about 4 hours until meat falls off the bone.
Remove from the oven and rest uncovered for one hour.
Carefully remove the legs from duck fat. Using cling wrap shape the leg meat like a sausage.
Rest till firm in a refrigerator.
Pan fry in butter adding salt, pepper, Sichuan, thyme , before you serve.