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
Chaudfroid sauce Madeira wine, which is cooked and reduced to a sauce consistency. Some simpler preparations of chaudfroid sauce omit the use of meat, and these can be prepared as a brown sauce, a white sauce and as a red sauce using tomato purée. A simpler preparation of chaudfroid sauce without the use of meat can be made by using espagnole sauce, adding ingredients such as aspic jelly, gelatin, cream and sherry to it, and cooking the mixture. Another simpler preparation technique that lacks meat involves the use of allemande sauce or velouté sauce and other ingredients. A sweet version of chaudfroid