Mexican Ceviche

Ingredients:
     1 lb halibut fillets or use a mixture of fish and shrimp
     5 -6 limes (enough Juice to cover fish)
     1 cup diced fresh tomato
     1 green pepper, sweet, chopped
     4 tablespoons chopped parsley or  chopped cilantro
     1/4 teaspoon salt
     1/4 teaspoon pepper
     1/2 teaspoon oregano
     2 jalapeno peppers, chopped (or more to suit your taste)
     2 tablespoons white vinegar
     1 medium onion, finely chopped
     2 tablespoons fresh cilantro, chopped
     1 dash Tabasco sauce lettuce leaf 
Directions:

1. Dice the fish (approximately 1/2-inch dice if using shrimp use cleaned shrimp).
2. Marinate fish in the lime juice in the fridge overnight (this step cooks the fish).
3. Stir often.
4. Pour off most of the lime juice (just leave it moist).
5. Add remaining ingredients except lettuce. Do this preferably a few hours before serving & refrigerate.
6. Toss well and arrange in individual serving bowls that are lined with the lettuce leaves.
7.  Garnish with your desired style.