Mix flour and salt in a large bowl.
Cut your shortening into this dry mixture using a fork or dough blender until coarse crumbs are created.
Add the egg white and white vinegar. Mix. Add ice cold water as needed until the dough sticks together.
Shape the dough into a ball, slightly flatten, wrap it tightly in cling wrap and place it in your fridge for at least 30 minutes.
Preheat your oven to 400oF.
Let cool for 15 minutes. Slice and serve!