I note that the grapefruit is optional because my husband prefers his without it (he’s not a grapefruit fan). You could also substitute orange or tangerine sections for grapefruit–or use any other fruit that sounds appetizing (I was very close to adding raspberries!) Omit the wasabi if you don’t like the hint of spiciness it gives or just use a little less (or more for you hot-lovers).