confit

a method of slow-cooking meat in fat at a low temperature to achieve tender, flavorful results

Confit is a French cooking technique traditionally used to preserve meat, most commonly duck, goose, or pork, by slow-cooking it in its own fat. The process involves gently cooking the meat at a low temperature in fat until it becomes tender and flavorful. After cooking, the meat can be served, but it is typically stored in the fat, which acts as a protective barrier, preventing air and bacteria from reaching the meat and allowing it to be preserved for an extended period.