1. Make the dough: In a food processor, pulse together the flour, pepper, and salt, then scatter in the butter and pulse until the mixture resembles coarse crumbs. Sprinkle in the ice water and pulse again, until the dough starts to come together and pull away from the sides. Transfer it to a floured surface. You should be able to form it into a shaggy ball, but add more cold water--a tablespoon at a time--if it won't come together. Flatten the ball into a thick disk, wrap in plastic wrap, and refrigerate for at least 30 minutes.