Never Fail Pie Crust

1 Cup Shortening
2 1/2 cups Flour
1 tsp Salt
1/4 cup Cold water
1 TBSP Vinegar
1 Egg

Mix flour, salt and shortening; cut to size of pieces with knife. In separate bowl beat egg; add water and vinegar to the eggs. Add the egg, vinegar and water to the flour mixture--mix well.