In a large bowl combine your flour and salt. Using a pastry cutter, cut in your diced up cold butter and vegetable shortening until your butter flour mixture is the size of oats.
Add your one egg, vinegar, and just enough cold water until the dough combines. start with 3 tablespoon and only add more if needed.
Knead your dough until just combined
Divide your dough in half. Wrap each half in plastic wrap. This recipe is for two crusts (top and bottom). This recipe only uses a bottom crust,, so you can freeze the second half for another pie later, or use it for an extra decorative edge.
Let your dough rest in the fridge for at least 4 hours to overnight
Take your dough out and let it rest at room temperature for 15 minutes. Roll out your dough on a floured surface using a rolling pin and then transfer it into your pie pan. Using a fork, poke some holes in the bottom of your crust.
Pick your pie crust design and finish the edges.
Brush the edges with an egg wash (1 beaten egg)
Place your crust back in the fridge again for 15-30 minutes
Partially pre-baking your crust. line your crust with parchment paper and fill it with pie weights. Bake your crust at 350 degrees for 10 minutes. Then take out your weights and parchment paper and bake it again for another 10 minutes.
Take out and let cool