To make the pastry, put the flour, salt and butter in a large bowl ... that fits into a 1 litre/1¾ pint pie dish. Line the pie dish with the pastry and fill with the pie mixture.
To make the pastry, put the flour and salt in a food processor and add the butter. Using the pulse function ... pin and gently unroll it into a pie dish. Trim the edges and, ideally, cover ...