To prepare a unbelievable fish batter recipe, first you need to gather your ingredients. First, you'll need the following ingredients: 12 cup flour, 1 teaspoon salt, 2 tablespoons butter, and 1 tablespoon water. Mix the ingredients together until they're well combined. Then, add the butter to the flour mixture and mix until it's completely incorporated. Pour the batter into the frying pan and cook it over medium-high heat until the fish is cooked through. Remove the pan from the heat and allow it to cool for 5 minutes before slicing it into bite-sized pieces.