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.

Oven Ready means that the food product is ready for cooking or ready to cook.

Ovenproof refers to a cooking material that can be safely used in an oven without the material burning or melting. Such a material is also called oven-safe.

O-Nigiri is another term for Onigiri which are Japanese rice balls.

O'Brien Potato refers to a potato dish made from diced potatoes which is fried crisp together with chopped onions and bell peppers. This dish is very easy to make, but they can now be bought in precooked and frozen packages in some U.S. supermarkets.

Okroshka refers to a cold soup from Kazakhstan which is made from Ayran, boiled potatoes, salami, cucumber and herbs.