Place ice and water in a glass to get cold, and set aside. (You aren't going to use the ice to make the pie crust, you just want to get the water as cold as possible)
In a medium sized mixing bowl, stir together the flour and salt
Cut in Vegan Butter substitute until pieces are the size of small peas. I find it easiest just to use clean hands (sans rings, of course :-)) to cut the vegan butter into the flour, rather than using a pastry cutter.
Sprinkle tablespoons of the water over the flour mixture, and toss gently with your hands or a fork until it is all moistened. You don't want to overmix the dough, though (overmixing will make the pie dough tough); just mix until all the flour mixture is moistened enough to form a ball. Use just enough of the water to moisten it enough to stick together, but you do not want your dough too wet.
If making double pie crust recipe, divide the dough in half and squeeze each half into a ball. If making single pie crust, leave it as a single dough ball.
On a lightly floured surface, flatten the dough ball a little. Then roll dough from the center to the edges, forming a circle about 12" - 14" (30-35 cm) in diameter (depending on size of your pie plate).
Wrap the pastry around the rolling pin. Then unroll is onto a 9" or 10" (23 cm or 25 cm) pie plate, and form it into the plate being careful not to stretch or tear the pastry.
For a single crust, trim the pastry to ½" (1.25 cm) beyond the edge of the pie plate, then fold under the extra pastry. Make a fluted, rope-shaped, or scalloped edge. Do not prick the pastry with a fork. (for the single crust, you can either bake prior to filling or after, depending on what type of pie you are making).
For the double crust, trim the bottom crust of the pastry to the edge of the pie plate. Roll out the remaining dough for the top crust, and cut slits in the pastry to allow steam to escape. Fill the pastry in pie plate with desired filling. Place top crust on filling. Trim top crust ½" (1.25 cm) beyond edge of plate. Fold top crust under bottom crust; flute edge.
Bake as directed in individual recipes.