Prepare the rice and spread in a cookie sheet, drizzle with vinegar. Allow to cool. Cut rice with spatula the same size as a sheet of nori, but 1/2 to 1 inch shorter.
Place rice on seaweed, vegetables and wasabi on rice, and dampen exposed seaweed. Roll up tightly, pressing the dampened nori down to hold the roll closed. Use a very sharp knife to cut into 1 inch thick slices.
Serve with soy sauce if desired.
Servings: