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 230ºC or 10 minutes or until lightly browned. SOURCE: Southern Living Magazine, October, 1979. Typed for you by Nancy Coleman