Hamburger Steak Sauce
["2 Tbsp. butter", "1 small onion, finely chopped", "1 stalk celery, finely chopped", "3 sprigs parsley", "1/2 lb. fresh mushrooms, sliced", "2 tsp. salt", "1/2 tsp. dried basil", "dash of pepper", "1 Tbsp. flour", "1 c. water", "1 Tbsp. lemon juice"]
["Melt butter and saute onion, celery and parsley until limp. Add mushrooms and cook for about 7 minutes.", "Add salt, basil, pepper and flour.", "Add water and lemon juice; cook slowly for 5 minutes until thick and bubbly."]
["butter", "onion", "celery", "parsley", "fresh mushrooms", "salt", "basil", "pepper", "flour", "water", "lemon juice"]