Stir in the salt, then add 2-3 tbsp water and mix to a firm dough. Knead the dough briefly and gently on a floured surface. Wrap in cling film and chill while preparing the filling.
ProportionsTo make more or less, remember the proportions - half fat to flour - and don't add too much water or the pastry will be hard. If other dry ingredients are included in the recipe, add them at the same time as the salt.