A method of producing a cereal food containing catechins in an amount of 0.1 mass % or more with respect to the dry mass of the cereal food, the method including spraying an aqueous solution of a purified preparation of a catechins-containing plant extract after forming a cereal food, the purified preparation of a catechins-containing plant extract having a turbidity of 30 FTU (formazin) or less at an aqueous solution of 0.5% solid content.
