Add the flour, salt and sugar into a large bowl and whisk to combine. Cut the vegetable shortening into cubes and scatter into the flour. Use a fork or pastry cutter to slice the vegetable shortening into the flour until you reach a crumbly texture.
Drizzle the milk across the flour mixture and use the fork to combine. Mix until everything comes together and you will be able to form a ball of dough. Don't over-mix.
Spread a clean tea towel over your work surface and lightly sprinkle flour over it. Scoop the dough into a rough ball, and put it in the center of the floured tea towel. Roll it out until you have a rough circle that is several inches bigger than your pie dish to allow room for the sides and edges of the crust.
Use the tea towel to help you flip the dough into the pie dish. If some pieces fall off that's fine. Use a knife to cut off the excess pastry around the edges. If there are any holes, fill them with some of the extra pieces. Pinch the edges to form a pretty crust.
Only do this if the recipe requires a cooked crust prior to filling it. Preheat your oven to 450F (230C). Pierce the crust all over with a fork. Bake the crust for 15 minutes. Reduce the heat to 400F and continue cooking until the crust is lightly browned, just a couple more minutes.
