sentence: slice tuna into small pieces sentence: slice green onions sentence: add some mayonnaise to the tuna in a bowl sentence: add chili powder chili oil and green onions to the mixture and refrigerate the mixture sentence: cook the sushi rice sentence: add rice vinegar sugar and salt and mix them with rice sentence: add rice to the nori sheet and add sesame seeds sentence: add tuna mixture on the other side of nori and roll the nori sentence: cut the sushi