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
Béarnaise sauce the department of Pyrénées-Atlantiques, in southwestern France. Like Hollandaise sauce, there are several methods for the preparation of Béarnaise sauce. The most common preparation is a "bain-marie" method where a reduction of vinegar is used to acidulate the yolks. Escoffier calls for a reduction of wine, vinegar, shallots, fresh chervil, fresh tarragon and crushed peppercorns (later strained out), with fresh tarragon and chervil to finish instead of lemon juice. Others are similar. Alternatively, the flavorings may be added to a finished Hollandaise ("sans" lemon juice). "Joy of Cooking" describes a blender preparation with the same ingredients. A "faux" Béarnaise can