Manjū (饅頭, まんじゅう) is a popular traditional Japanese confection. There are many varieties of manjū, but most have an outside made from flour, rice powder and buckwheat and a filling of anko (red bean paste), made from boiled azuki beans and sugar. They are boiled together again and kneaded. There are several varieties of bean paste used including koshian, tsubuan, and tsubushian.