I’ve made this appetizer in so many different versions. I’ve served it with a raw tuna and salmon combination to a more daring crowd, but here I’ve given you a cooked tuna or salmon version. I like the way the cucumbers hold the dish together here, but I’ve also served it with sushi rice at the base and the components detailed below piled on top of it. Whichever way you serve it, the combination of flavors is sure to be a real crowd pleaser.