These mini cakes use white peach powder from "Arakawa peaches," grown in Momoyama-cho, Kinokawa City, Wakayama Prefecture, an area with a warm climate and well-drained soil ideal for peach cultivation. Momoyama-cho, also known as a "peach paradise," is famous for its sweet and juicy "Arakawa peaches," and these mini cakes offer a delightful burst of peach flavor.