Veganbaking.net - The Hows and Whys of Vegan Baking
Veganbaking.net - The Hows and Whys of Vegan Baking
  
One of the many tricks to mastering pie crusts is keeping your ingredients cool so the fat doesn't melt before the crust hits the oven. When the fat melts, the crust turns out tough and mealy instead of light and flaky. Use ice water (without the cubes) and keep your flour and bowls in the refrigerator beforehand to keep things as cool as possible.