Ham Stuffed Potatos

Ingredients:
4 lg Baking potatoes
Vegetable oil
1 Egg; separated
1/2 c  Ham; cooked, finely chopped
1/4 c  Milk
1/2 ts Salt
1/4 ts Pepper
 
 Scrub potatoes thoroughly, and rub
skins with oil; bake at 400 degrees for
1 to 1-1/4 hours or until done.
  Allow to cool to touch.  Slice skin away 
from top of each potato. Carefully
scoop out pulp, leaving shells intact; mash pulp.
  Beat egg yolks; add ham, milk, salt, and pepper. 
Stir into potato pulp, mixing well.  Beat egg white
until stiff peaks form; fold into potato
mixture.  Stuff shells with mixture. 
Bake at 450 degrees for 10 minutes or
until lightly browned.