In a large bowl, mix the flour, salt, and sugar.

Add the cold cubed butter. Use a pastry cutter or two knives to cut the butter into the flour until it resembles pea-sized crumbles.

Drizzle in 6 tablespoons of ice water. Gently mix with a fork until the dough begins to hold together. Add additional ice water 1 tablespoon at a time if the dough is too dry.

Divide the dough into two equal disks, wrap tightly in plastic wrap, and chill in the refrigerator for at least 1 hour before rolling out.