To provide a variety of foods that are free from psychological barriers caused by the appearance of pig's trotters, chicken legs, chicken wings and the like and that contain collagen in large amounts.

Meat grains and/or meat powders obtained by boiling and/or steaming bone-in meat such as pig's trotters, chicken legs and chicken wings together with liquid seasoning, separating the meat into bone and meat portions, and crushing and kneading the meat portion are optimally blended into rice foods, mince foods, soup foods, or other foods such as confectionery foods to manufacture foods containing the meat grains and/or meat powders.