Catch Katsu (Fried Breaded Tuna Sushi)
- Salad oil for frying
- 1/2 lb ahi (yellowfin tuna) or aku
- (skipjack tuna) fillet
- 1 cup water
- 1 egg
- 1 cup flour
- 1 lb panko (Japanese flour meal)
- 2 cups Sushi Rice
- 1/2 cup mayonnaise
- 1/2 teaspoon masago (capelin fish roe)
- Chopped green onion