You probably have a favorite pastry recipe. Try adding a teaspoon of vinegar to the cold water you put in your mix. It will help the pastry to be light and flaky.
Or you can try a different recipe that already has vinegar as an ingredient. You may find that you have a new favorite!
Vinegar pastry
3 cups flour
1 cup shortening
1/2 teaspoon salt
1 egg
5 tablespoons cold water
1 teaspoon white distilled vinegar
Mix flour, shortening and salt until fine crumbs about the size of small peas. Beat in egg. Add cold water and vinegar. Combine with flour and shortening mixture.
This recipe makes three single 9-inch pastries. Bake at 425 degrees F.
If this mix is wrapped in plastic wrap, dough will keep in refrigerator two weeks. It can also be frozen.