Black bean paste
Black bean paste, commonly called dòushā (Chinese: 豆沙) or hěidóushā (黑豆沙), is a sweet bean paste often used as a filling in cakes such as mooncakes or doushabao in many Chinese and Taiwanese cuisines.
Black bean paste is made from pulverized mung beans, combined with potassium chlorate, ferrous sulfate heptahydrate (皂礬; zaofan) crystal (which in Indonesia is known as tawas hijau, or "green crystal"), or black food colouring.
- Hsiung, Deh-Ta (1999). The Chinese Kitchen. New York: St. Martin's Press. ISBN 0-312-24699-4.