The filling will make or break your pie. A rich, full-flavoured gravy is a must, but the best flavour is a matter of personal preference. See below for recipes that have stood the test of time and ...
Here The Hairy Bikers use it to make a simple, hearty pie. For the filling, melt the butter with the oil in a large non-stick frying pan. Add the onion, celery, carrots and potatoes. Cook over a ...