Quick White Fudge Icing I

Procedure

1. Place the water, butter, shortening, syrup, and salt in a saucepan. Bring to a boil.
2. Sift the sugar into the bowl of a mixer.
3. Using the paddle attachment and with the machine running on low speed, add the boiling water mixture. Blend until smooth. The more the icing is mixed, the lighter it will become.
4. Blend in the vanil