Remember extra cold beer and avoid overmixing batter for best results. If the batter is too thick, it may not get as crunchy and absorb oil. If the batter is too thin, it may not coat shrimp evenly. The reason the beer has to be cold is that you want a cold batter. When the cold batter hits that hot oil, that's where it will create that crunch factor! We don't want to overmix the batter because that will create more gluten and we don't want that!