Otoshibuta refers to; a lid that is placed directly on ingriedents inside of the pot. With Otoshibuta, heat is allowed to circulate well and soup to evenly absorb. It effectively cooks ingriedents with little liquid. Moreover, Otoshibuta is a Japanese wooden drop -lid that fits just inside the sides of a straight-sided pot. The Otoshibuta keeps simmered items submerged in liquid while cooking and prevents delicate items from breaking up due to moving around the pot.