In the work bowl of a food processor, place flour and salt; pulse until combined. Add cold butter, and pulse until mixture is crumbly and butter is pea-size, 12 to15 pulses.

In a small bowl, combine ½ cup (120 grams) cold water and vinegar. With processor running, add vinegar mixture to flour mixture in a slow, steady stream just until dough comes together. (Mixture will look crumbly, but it should stick together when squeezed between your fingers).

Turn out dough. Divide in half, and shape each half into a disk. Wrap tightly in plastic wrap, and refrigerate for at least 2 hours. Dough may be refrigerated for up to 3 days or frozen for up to 2 months.