Tokyo Banana is a Japanese sponge cake with a creamy banana filling, produced by Grapestone. Introduced in 1991 as a sweet souvenir from Tokyo, it is recognizable by its miniature banana shape and is part of Japan’s omiyage culture - bringing gifts home from travels.

It consists of soft sponge cake and a creamy banana custard filling. The filling uses purée made from carefully strained real bananas, while the sponge is baked and then steamed, giving it an airy, moist texture.

It is characterized by a combination of delicate, fluffy sponge and a smooth, sweet filling with a pronounced banana flavor.