Mashed Potatoes with bacon

1 pound potatoes 1 pound apples, granny smith or other tart variety 1/2 teaspoon salt 2 slices bacon cut into 1/4 inch pieces 2 each onions or one large 2[...]

4 cups cubed peeled potatoes 1 1/2 cups water 4 -6 tablespoons milk 3 tablespoons butter , softened 1/2 teaspoon salt 1/2 teaspoon pepper 1 cup frozen corn[...]