they are manufactured by hand. a starch-like core is placed in a pan and wrapped with starch syrup. then, soybean powder ("kinako") is placed on the surface. they can be made in different colors by using different-colored soybeans, such as blue soybeans. it was introduced 140 years ago and was sold at tadenji temple in fudogaoka. it was sold under the name of "5 rice bar" during the edo period. it is occasionally served in school meals for public elementary and junior high schools in modern times. it costs about 400 yen for twelve pieces.