Roux in Bosnian, Croatian, Serbian, and Macedonian, () in Bulgarian, in Hungarian and in German. Japanese curry, or , is made from a roux made by frying yellow curry powder, butter or oil, and flour together. The French term has become a loanword in Japanese, , or more specifically . Roux ("meyane") has been used in Ottoman and Turkish cuisine since at least the 15th century. The fat is heated in a pot or pan, melting it if necessary. Then the flour is added. The mixture is heated and stirred until the flour is incorporated, and then cooked until at least
Yak butter needed in cold high altitudes. Sometimes rancid butter is used, which gives the tea a different taste. Melted yak butter may be mixed, in roughly equal proportions, with roasted barley flour (tsampa). The resulting dough, mixed with dates or sesame seeds, is used for welcoming guests. It can also be stored for later use and then melted into hot water, to which salt or sugar has been added. Yak butter is used in traditional tanning of hides. Old, rancid butter is preferred over fresh. Other non-food uses include fueling yak-butter lamps, moisturizing skin, and the traditional butter sculptures for Tibetan