Best Ever Flaky Buttermilk Pie Crust Pastry

(about 188 g) unbleached all-purpose flour, plus extra for rolling dough

all vegetable palm shortening

buttermilk

(about 12 g) granulated cane sugar

nutritional yeast powder

fine-grain sea salt

to 3 tablespoons (30 to 45 ml) purified ice water, as needed

Chilled purified water, to make ice water

Ice cubes, to make ice water

-inch (23 cm) round pie plate or pan

Rolling pin

Dough scraper (also known as bench or pastry scraper, or dough cutter)

Soft natural pastry brush

Wax paper, for rolling dough, optional

Aluminum foil, to prevent over-browning of crust

Pie crust shield, to prevent over-browning of crust, optional