Tempura Batter

1 cup all-purpose flour 2 tablespoons cornstarch 1/2 teaspoon salt 1 cup ice water (if you desire a beer batter) or 1 cup beer (if you desire a beer batter) 1[...]

1 cup ice-cold water 1 large egg , lightly beaten 200 g plain gluten-free flour, double sifted 1 TO MAKE BATTER. 2 Pour the beaten egg into a measuring jug[...]