Lips and teeth are fragrant. Sushi is usually made by mixing rice grains with various ingredients and wrapping the outermost layer with seaweed. Biting down will have a good layering, full of fragrance, and the lips and teeth will remain fragrant. So sushi tastes good. You can eat sushi with mustard, special sushi vinegar and soy sauce, which are all good choices and can also improve the taste.