Fool Proof Pie Crust

Submitted by Amanda
When I first made this I was skeptical but it turned out wonderfully, flaky and delicious.

4 c. flour
1 3/4 c. shortening (I use butter flavored)
1 T. sugar
2 tsp. salt
1 T. vinegar OR lemon juice (I've tried both and can't tell a difference)
1 egg
1/2 c. water

With a fork, mix first four ingredients together. In a separate dish, beat vinegar, eggs, and water. Combine the two mixtures, stirring with a fork until all pieces are moistened. With hands, mold dough in a ball. Chill at least 15 minutes before rolling out.

(Dough can be kept in the refrigerator 4 or 5 days)