Castella, also romanized as kasutera, is a type of traditional Japanese confectionery (wagashi). Castella is similar to spongecake but fluffier and more complex in flavor. Castella is delicate, bouncy, and leavened solely by technique rather than a leavening agent. Castella contains no fat, salt, or baking powder. Whipped eggs, flour, sugar, mizuame, and technique are what gives castella its signature texture and flavor. Modern iterations of castella, such as those produced by Karaku, introduce different flavors such as honey, green tea, and milk.
Uses: Slice castella and enjoy as a dessert or snack with tea.