3 perfect batter for fish Recipes

white fish (cod or pollack fillets, skinned and cut into bite-size chunks), sunflower or vegetable oil, lime wedges, to serve, plain flour, caster sugar, full-bodied beer (any type ), good-quality mayonnaise, juice 1 lime, handful coriander leaves, chopped, potatoes (maris piper or king edwards)

fresh halibut or 1 1/2 lbs sole, lemon juice, cold water, salt, white pepper, all-purpose flour, salt, white pepper, luke water, active dry yeast, all-purpose flour or 3/4 cup potato flour, salt, olive oil or 1 tsp canola oil, beer , of your choice, egg white, granulated sugar