It's not really right to put wasabi directly on the roll — think of it more like a palate cleanser (kinda like mouthwash) that wipes away the flavor of the last piece so you can fully taste and enjoy the next one fresh.
Nunca he probado sushi,lo que sí me gustaría probar es la cerveza japonesa o sake importante debe tener grados alcohólico, no me gusta el refresco efervescente.