Ham And Potatoes Au Gratin
["3 Tbsp. ham fat, melted", "3 Tbsp. flour", "1/8 tsp. pepper", "1 onion, minced", "2 1/2 c. milk", "5 to 6 c. cubed, boiled potatoes", "2 1/2 c. cooked, cubed ham", "1/4 c. grated cheese"]
["Melt ham fat and blend in flour, pepper and onion.", "Add milk gradually and cook slowly, stirring constantly, until sauce thickens slightly.", "Add potatoes and ham.", "Stir.", "Put in 1 1/2-quart baking dish.", "Top with cheese and bake at 400\u00b0 for 25 minutes.", "Yields 4 servings."]
["ham fat", "flour", "pepper", "onion", "milk", "potatoes", "ham", "grated cheese"]