Melt the butter in a skillet. Saute the garlic and bell pepper until the garlic smells good (about a minute).
If using shrimp, add them to the pan and cook until they turn pink. Crawfish and crabmeat are already cooked; add them, and proceed immediately with the rest of the recipe.
Add the wine and bring it to a boil for about a minute. Then add the shrimp or crab stock and the Tabasco green pepper sauce, and return to a light boil.
Add the green onions, tomato, and salt. Lower the heat and simmer, agitating the pan to mix the contents. Cook only long enough to heat everything through, then stir in all the other ingredients. Remove from the heat and keep warm.
To make the sauce, bring the whipping cream to a light boil in a saucepan and reduce by half. Stir in the sour cream until well blended. Add the remaining ingredients and cook for about another minute. Add salt to taste.
Warm the tortillas on a griddle or in a wide, heavy skillet. Spoon the filling into the tortillas and roll closed, seam side down, on the serving plate. Nap with the pepper cream sauce.
