No Coast Sushi in Grand Junction, CO) is the tuna poke. The last time we went there, I asked the sushi chef what was in it. He told me, and I decided to try it myself.
I was at Whole Foods earlier today and they had a few odds and ends of sushi grade tuna. I would never buy a whole pound, both because it's expensive, and because I'm really the only one in the house who'd eat it the way nature intended- raw! But I was willing to spend $10 on the end piece of a fillet.
I brought it home and cut it in a small dice. Then I marinated the pieces in a little shoyu (soy sauce), sesame oil (not too much because it is really strong flavored), a tiny amount of garlic powder a small handful of sesame seeds and about 4 Tbsp. of flash fried scallions (chopped scallions thrown into hot oil for about 45 seconds), and a few fresh chopped scallions. I let that marinate in a bowl while I flash fried some won ton wrappers. To serve it, I put about a tablespoon of tuna poke on a won ton chip.