FLAKY PASTRY DOUGH

Steps:

• Blend together flour, salt, and half of butter cubes with your fingertips or a pastry blender until mixture resembles coarse meal. Blend in remaining butter cubes until pea-size lumps form. Drizzle evenly with 5 tablespoons ice water and stir gently with a fork until incorporated.
• Squeeze a small handful: If it doesn't hold together, add remaining tablespoon ice water, 1/2 tablespoon at a time, until just incorporated. (If you overwork mixture, pastry will be tough.)
• Form dough into a ball, then flatten into a rough 5-inch square. Chill, wrapped in plastic wrap, 30 minutes.
• Roll out dough on a floured surface with a floured rolling pin into a rough 12- by 9-inch rectangle (1/3 inch thick). Arrange rectangle with a short side nearest you. Cut remaining 3 tablespoons butter into very thin slices and arrange evenly over dough.
• Fold dough in thirds like a letter. Turn dough so that a short side is nearest you and roll out into a rough 12- by 9-inch rectangle (1/3 inch thick) again. Fold like a letter, then chill, wrapped in plastic wrap, 3 hours. Let dough soften at room temperature about 30 minutes before rolling out.