Great Grandma Stott's Never Fail Pastry (makes enough for one double-crust pie or two single-crust pies)
1 tsp salt
1 c shortening, until the mixture is part meal, part pea-sized.
To the side, combine:
1 T vinegar
0.5 c cold milk (maybe a touch more than 0.5)
After a few minutes pour the milk mixture into the flour mixture and stir. Divide, roll out, etc.