Butterscotch Sauce
["1 c. light brown sugar, packed firmly", "1/2 c. water", "3/4 c. condensed milk", "2 tsp. butter"]
["Blend sugar and water in medium size pan and boil together until sugar forms heavy drops on top of spoon.", "Remove from heat; stir in milk and butter."]
["light brown sugar", "water", "condensed milk", "butter"]