Prepare the Sushi Rice: Follow the package instructions to soak, simmer, and steam the rice. Mix in a cooled vinegar and sugar solution for the perfect sushi rice texture.
Layering the Cake: Line your baking tin with paper and a nori sheet. Spread half the rice, followed by avocado slices and salmon, creating distinct layers.
Repeat the Layers: Add another nori sheet, the remaining rice, and layers of avocado and salmon to complete the assembly.
Chill and Serve: Refrigerate the cake until firm. To serve, invert the cake onto a platter, garnish with sesame seeds, and accompany with soy sauce mixed with ginger.