Also known as brown bean sauce, yellow bean sauce and miso in Japan, bean paste is an Asian condiment made from fermented yellow soybeans, flour, water and salt. Some varieties of this thick sauce are quite smooth; others contain some whole beans. It adds saltiness, rich flavor and body to bland vegetable and tofu dishes. It is also used to season fish, beef, pork and duck. Hot bean paste, which gets its heat from chilies, is also available. Bean paste may be purchased in cans or jars in Asian markets and larger supermarkets. After opening, transfer canned bean paste to a covered glass jar. Store in the refrigerator for up to one year. If the sauce becomes too thick, stir in a little peanut oil.