Vietnamese Fish Tacos

Sometimes I open the cabinet and just start cooking. Othertimes, I have a specific flavor or thought in mind, and manage to realize it in the kitchen. This is one of the latter. Great for a summer night, or to remind yourself that summer will be back.
Prepare 1/2 hour or longer in advanceTime to prepare: 10 minutesTime to cook: 10 minutes
Any dense, white fish - (did this with cod)2 lemongrass stalks2-3 tbl fresh cliantro1 clove garlic1-2 tbl vegetable oil (not olive oil)Ground fresh pepperSoft flour tortillasAvocados
Chop lemongrass, clilantro and garlic together. Mix with oil, and spread over both sides of the fish. Add a little black pepper, cover, and let it sit for 1/2 hour or longer.
Chop up avacodos and heat up the tortillas 5 minutes before you want to start to cook.
Grill or broil the fish for 5-10 minutes.
Flake fish into tortillas and wrap. Serve with avacados on the side.