Potato Soup

2 cups diced potatoes
1/2 cup diced celery or 1/4 teaspoon celery salt
1/4 cup minced onion
3/4 cup water
1 teaspoon salt
1 cup milk
1 tablespoon butter
Dash of pepper

Cook potatoes, celery and onion with salt in just enough water to barely cover. Cook over moderate heat until vegetables are tender. Mash vegetables slightly in liquid. Add milk and butter. Heat. Add pepper and celery salt if preferred.

Makes two generous servings.