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
Tongseng marketed themselves as "Warung Sate Solo", a "warung" or small modest restaurant that specialized in offering satay, "tongseng" and "gulai" as their main fare. Tongseng Tongseng is goat meat, mutton or beef stew dish in curry-like soup with vegetables and "kecap manis" (sweet soy sauce). "Tongseng" is commonly found in Indonesian region of Central Java; from Surakarta to Yogyakarta. However, it is believed that dish was originated from Klego district in Boyolali, Central Java. The term "tongseng" derived from Javanese term "osengan" which refer to "stir frying" to describes its cooking method. It also refer to the ""seng"" friction sounds