Coins of the pound sterling also became known as a "pound". (240 actual pennies, however, weighed only 5400 troy grains, known as tower pound, a unit used only by mints. The tower pound was abolished in the 16th century.) The silver penny remained the primary unit of coinage for about 500 years. The purity of 92.5% silver (i.e., sterling silver) was instituted by Henry II in 1158 with the "Tealby Penny" — a hammered coin. Over the years, the penny was gradually debased until by the 16th century it contained about a third the silver content of a proper troy 24 grain pennyweight. By 1915,
Five Grains as in the Min Nan custom of creating a Taoist stove to cook "Chui Zhao Fan", a meal for the Kitchen God in which five dry seeds are placed into a slot in the chimney of the stove. Casual worshippers may simply use any five beans (e.g., of different colors) instead of any particular set of grains. Chinese cuisine is not known for any single recipe using all five grains, so there is no grain equivalent of five-spice powder or "eight treasure rice" (八寶飯, "babaofan"). Many, perhaps most, Chinese cooking employs the grains in some fashion, though: rice, congee, noodles,