Fish Tacos

Coating Ingredients
1 1/2 cups beer (or substitute seltzer water)
1 cup flour
1 tbsp cornstarch
1 tsp salt
3/4 tsp garlic powder
1/4 tsp cayenne pepper
Mix breading then dip fish in panko

Sauce
1/2 cup sour cream
1/3 cup mayonnaise
2 tablespoons lime juice
2 teaspoons adobo sauce (from canned chipotles in adobo)
1 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon table salt