In a large mixing bowl, combine the all-purpose flour and salt.
Add the cold, cubed butter to the flour mixture.
Using a pastry cutter or your fingers, work the butter into the flour until the mixture resembles coarse crumbs. The butter pieces should be about the size of small peas.
Gradually add ice water, one tablespoon at a time, and mix the dough with a fork.
Stop adding water when the dough begins to come together. You want it to be moist but not too sticky.
Divide the dough into two equal portions and shape each into a flat disc.
Wrap them in plastic wrap and refrigerate for at least 30 minutes. Chilling the dough helps prevent it from becoming tough.