Pastry Dough

Directions

1. 1
   Measure unsifted flour into a bowl, and stir in the salt.
2. 2
   With two knives, cut in the cold shortening until the mixture is granulated, not creamy.
3. 3
   Combine the egg yolk, vinegar, and water.
4. 4
   Make a well in the flour mixture, and pour the yolk-mixture into the well.
5. 5
   Mix thoroughly using one knife.
6. 6
   Beat the egg white until stiff, but not dry, and fold it into the dough, mixing well.
7. 7
   Shape the dough into a ball and sprinkle it with flour.
8. 8
   Turn the dough onto wax paper, dusting with flour if necessary.
9. 9
   Shape the dough into an oblong 4 inches across.
10. 10
    Wrapp tightly, and refrigerate or freeze.