In this episode of Claire Recreates, Claire Saffitz takes on Japan's most beloved souvenir treat ... the Tokyo Banana. These soft sponge cakes filled with sweet banana custard are a staple of Japanese train stations, gift shops, and childhood memories. Claire breaks it down step-by-step, making everything from scratch, from the light-as-air sponge cake to the rich banana cream filling. Whether you're a Tokyo Banana superfan or discovering this iconic snack for the first time, follow along as Claire gives this classic the Dessert Person™ treatment.