I love Unagi Sushi also!
Unagi is avaialable here in Northern Va. at an ethinic (Korean I believe) grocery store called Grand Mart. It is already cooked and then flash frozen.
All there is to do is prepare a pot of Sushi rice, I use a widely available California brand, the name escapes me just now. Follow any good Sushi rice recipe, add a little sugar, and rice vinegar as you cool the rice down, again just follow any good Sushi rice recipe.
Heat the Unagi in a hot oven until it is warm, it is already cooked and glazed. Slice it accordingly, with care cuz sometimes it is a little fragile. You’ll need a very sharp knife.
You’ll also need some seaweed strips, these are widely available also, buy the already cut strips or the sheets and cut your own.
Shape your rice, add a dab of Wasabi to keep the Unagi in place on top, wet the end of a seaweed strip and wrap it up!
I’ve been told that it is impolite and not proper Sushi ediquitte to dip a piece of Unagi in soy or sdditional Wasabi. I however always do, I’ve always believed in the Justin Wilson philosophy of ‘The kind of wine you like, is the kind of wine you should drink’ So if I like my Unagi with a little extra dip, the that’s the way I’m gonna eat it!!!….LOL!