Add the flour, butter and salt to a stand-mixer (see note 4).
Work the ingredients together until you are left with a coarse breadcrumb texture. It is okay if you have larger chunks of butter remaining.
Add one tablespoon of cold water. Allow it to combine with the dry ingredients, and very gradually add more as necessary. I usually need to use 3-4 tablespoons, but it can vary, depending on the flour used.
The dough is ready when it pulls together and has a very slight tackiness to it.
Form into a rough ball, cover with clingfilm, and place in the fridge for about 15-30 minutes.
Pre-heat the oven to 190℃ / 375℉.
When ready, roll out the pastry into a rough circle, and place in an oven dish (see note 5). Trim any edges.
Cover with baking paper and line with rice or dried beans. Spread them out towards the edges, as this will hold the pastry in shape (see note 6).
Bake for ten minutes.
Take out of the oven, and remove the baking paper and rice/beans.
Turn the oven down to 175℃ / 350℉ and place the pie crust back in the oven to bake for a further five minutes.