Mix together the flour, water and salt. Crack in the egg and mix well. Let batter rest for a few minutes at room temperature. Lightly oil a frying pan with a little oil, heat until very hot and add a ladle of batter. Cook until lightly golden. Turn the pancake over with a spatula and cook for one minute. Repeat with the remaining pancake batter, re-oiling the pan each time. Makes 10 pancakes.