My family's pie crust secret involves lard (and a cold kitchen)
My grandma always put lard in her pie crusts (animal fat, yes). She said it made them tender and flaky. These days, most recipes call for butter or shortening, but I go with lard. It has a higher melting point, so the crust stays crisp. You have to keep everything cold, though (that's key). I mix it by hand, just like she did, and add ice water little by little. The result is a crust that shatters when you bite into it. It might sound gross to some, but trust me, it's tasty.