Combine the flour and salt in a large mixing bowl. Add the lard and work it in with your hands until the mixture resembles coarse crumbs. Add the water, 1 tablespoon at a time, working it in with your hands. Add only as much as you need to make a smooth ball of dough. Wrap it in plastic wrap and refrigerate for at least 30 minutes.
Remove the dough from the refrigerator and place it on a lightly floured work surface. For 2 crusts, cut the dough in 2 equal pieces and put the second half back in the refrigerator. For each crust, roll out the dough on the floured surface into a square about 14 inches across and 1/8 inch thick. Gently fold the square of dough in half and then in half again so that you can lift it without tearing it, and unfold it into a square baking pan. Fill and proceed as directed in the recipe.
Yield: 2 piecrusts, enough for one 9-inch and one 10-inch crust