Cook together 2 cups of granulated sugar, 1-1/4 cups of water a little less than 12 minutes. Just before it reaches the soft ball stage, beat in quickly 25 marshmallows; when dissolved and a thick, creamy mass, spread between layers and on top of cake. This is a delicious creamy icing when made according to directions. If sugar and water be cooked one minute too long, the icing becomes sugary instead of creamy. One-half the above quantity will ice the top of a cake nicely.