Place dry ingredients into the bowl of a food processor. Cut up butter into slices and add to dry ingredients. Run food processor for 10-20 seconds until the butter is finely incorporated.
Add ice water and vinegar, then run food processor until the dough comes together to form a ball. Dough should be smooth and only barely sticky. If it's crumbly, add a little more ice water (1/2-1 tablespoon at a time). If it's too sticky, add a little more flour (1-2 tablespoons at a time). Remove dough from processor.
On a clean counter, sprinkle a generous amount of flour. Sprinkle a little flour on ball of dough and form it into a flat disk. Cover top of disk with flour and start to roll out dough, rolling it in all directions to maintain the circular shape as much as you can. Once your circle is about 9-10 inches in diameter, lift it off the counter, redistribute the flour underneath it (to keep it from sticking) and place it back down again. Sprinkle more flour on top as needed, and keep rolling until your circle is about 2 inches larger than your pie plate all around.
Gently fold dough in half, then in half again. Place the quarter size dough in your pie plate and gently unfold the dough to cover one half, then the whole dish. Let it relax down into the plate, then form the crust to your liking. Turn any pie crust scraps into pie crust cookies (spread with butter, sprinkle cinnamon and sugar on top, then bake at whatever temperature you're baking your pie, for about 15 minutes or until the edges just start to lightly brown.)
Bake your pie following the recipe's directions.
Notes
Recipe from Ruth Levy Beranbaum's The Pie and Pastry Bible.