You can add whatever fillings you want to these rolls, but I'll given you some of my favorites and some other suggestions.
Possible Fillings: (use one to four)
* Sliced egg omelets (4 eggs, 2 tsp. sugar, dash salt, vegetable oil)
* Dried Shitake Mushrooms (12 mushrooms, 1 cup chicken broth, 4 tbs sugar, 2 Tbs soy sauce)
* Canned Salmon, drained and flaked
* Ripe avocado cut into thin strips
* Parboiled snow peas cut into thin strips
* Crab meat
* Strips of proiscuto cheese
* Bell pepper strips
* Cooked asparagus tips
* Whole green beans, blanched
4 cups rice (long grain white or Cal rosé)
4 cups water
1/2 cup vinegar
5 tbs sugar
1 tsp salt
5-6 sheet nori (seaweed)
Prepare one to four items for filling. (Our favorite combination is the egg, mushroom, salmon, and avocado.)
For Sliced Egg Omelet:
Break eggs into a bowl, and stir. Add seasonings and strain through a sieve. (This makes the texture more smooth and uniform). Heat an oiled frying pan and pour about 1/4 cup egg mixture, spreading to cover the entire bottom of the pan. When egg is almost cooked (it starts to loose its shine) roll up from one end. Remove from pan and cool. Repeat with remaining egg. Slice length wise.
For Shitake Mushrooms:
Rinse and soak in water. Cut off hard tips. Cook in chicken broth and sugar, skimming the scum, for 4-5 minutes. Add soy sauce and simmer over medium heat until liquid is gone (a bit syrupy in the bottom). Cool on a plate or cutting board. Discard stems and cut into thin slices.
Wash the rice before cooking. Add water and let it stand for 1 hour (a good time to prepare the fillings). Make vinegar mixture (put everything into a small bowl and stir) and set aside. Bring water to a boil and cook according to the directions on the rice package. After it's done cooking, leave it to steam for 7-8 minutes.
Transfer rice to a large, deep baking pan. Pour the vinegar mixture over the rice and stir with vertical cutting movements, cooling as much as possible while doing this. Let sit until it reaches skin temperature.
Lay a bamboo mat down and place a sheet of nori, shinny side down, on it. Spread 1/5 to 1/6 of the rice on the nori leaving about 3/4 inch at the far edge. Lay the fillings in long horizontal strips across the rice. Using the bamboo mat, bring the bottom edge of the nori to the top and join together. Using bamboo mat, press to shape, rolling to tighten. Cut into eight equal slices (a sharp knife and water for rinsing are useful). Repeat until done.