1 1/4 cups flour
4 oz COLD unsalted butter (1 stick), cut in ~8 pieces
1/2 tsp KOSHER salt (or 1/4 tsp table salt)
1 tsp sugar
1/4-1/3 cup cold water
Mix the flour, salt and sugar in a stainless steel bowl. Add the cold butter (cut into 1/2" blocks). Cut the butter into the flour mixture using a pastry cutter until it resembles coarse meal (the butter chunks are pea size). You can also use a food processor using the pulse feature to get the same effect. Do not overmix! The key here is to keep the butter and flour from blending or you'll end up with doughy, elastic crust.
Add just enough cold water (and no more) and blend quickly with a few strokes using the pastry cutter. The key here is to get the flour mixture to just come together slightly. The dough will seem like it doesn't come together but it will later, trust me!
Turn onto a large piece of plastic wrap, form into a ball and refrigerate for at least 1 hr or more. The colder the dough the easier it is to roll.
Turn onto a floured table and roll out.
Remember to work the dough the LEAST possible; the more you work the dough, the less flaky and more doughy the crust will be!