Potato Cheese Soup
["4 c. diced potatoes", "1/4 c. diced onion", "2 1/2 tsp. salt", "1/4 c. margarine", "1/4 c. flour", "1/4 tsp. pepper", "1/2 tsp. powdered mustard", "1/2 tsp. Worcestershire sauce", "2 c. milk", "1 1/2 c. grated cheese"]
["Combine potatoes, onion and salt; cover with water (not too much water, just until the potatoes are covered).", "Bring to a boil."]
["potatoes", "onion", "salt", "margarine", "flour", "pepper", "powdered mustard", "Worcestershire sauce", "milk", "grated cheese"]