In a pet food for a senior cat, and the like, for which strict adjustment of the content of the mineral component is required, to provide a pet food excellent in terms of palatability at the same time while stabilizing the quality by the strict adjustment of the mineral component. the content ratio of free amino acid present on the surface of pet food pellets is 5.0% or more relative to total free amino acid of the pet food, and a fluctuation range as defined by the maximum to the minimum value of total mineral content among ten lots of product is 1.0% or less.