To prepare a beer battered fish and spicy chips lemon habanero tartar sauce and serrano vinegar recipe. Preheat the oven to 375 degrees F (190 degrees C). Place the fish fillets in the bottom of an oven-proof glass baking dish. Pour the beer mixture into the dish and stir to coat. Bake for 20 minutes or until fish flakes easily when pierced with fork. Remove from oven and allow to rest for 5 minutes before serving.