Au jus the cook may simply skim off the fat from the juices left after cooking and bring the remaining meat stock and water to a boil. "Jus" can be frozen for six months or longer, but the flavor may suffer after this time. American recipes "au jus" often use soy sauce, Worcestershire sauce, salt, pepper, white or brown sugar, garlic, beets, carrots, onion, or other ingredients to make something more like a gravy. The American "jus" is sometimes prepared separately, rather than being produced naturally by the food being cooked. An example could be a beef "jus" made by reducing beef
Pot-au-feu lord's land. For people living in towns, it was easier to buy inexpensive pieces of meat, which needed long cooking times. The method of cooking all food together and for extended periods of time (the whole day sometimes) gave what was called a ""pot-pourri"" in French and imported into English in the early 17th century. The relation between "pot-pourri" and "pot-au-feu" was attested in 1829 in the "Etymologic dictionary of the French language: ""Pot pourri. The name our fathers gave to the "pot-au-feu""". The cuts of beef and the vegetables involved vary, but a typical "pot-au-feu" contains: Cooking cartilaginous meat