Begin to preheat your oil to 350F to save time because you want to fry immediately after dipping into wet batter.
Cut your cod filets into desired size. I like to cut them diagonally to maximize the crunchy bits.
Season fish lightly with salt then cover in flour.
2 8oz cod filets, 1 tsp salt, ¼ cup flour
Mix together all your wet batter ingredients in a bowl. The consistency should be runnier than pancake batter. If it is too thick, add more beer or carbonated water.
½ cup flour, ½ tbsp garlic powder, ½ tbsp onion powder, ½ tbsp salt, 1 tsp black pepper, 170 ml carbonated water or beer, 3 ice cubes
Dip the flour-coated fish into the mixed wet batter and immediately drop into hot oil for 5-8 minutes or until golden brown. Fish cooks quick so I remove right when I see the golden color.
Sprinkle with more salt to taste on top.