Make Creamy Lime Sauce: Mix together yogurt and mayo. Stir in lime juice. Stir in cumin, dill, and cayenne. If desired, add dash of salt and black pepper to taste. Set sauce in fridge (make ahead for flavors to meld.)
Follow directions for Beer Battered Fish. (Click the link above)
Warm up tortillas to soften. Assemble fish tacos, with desired garnishes and creamy sauce while fish is crispy and hot!