Fluffy Boiled Icing

Directions

1. 1
   In a heavy saucepan combine sugar, water and cream of tartar.
2. 2
   Slowly bring mixture to a boil, stirring sides of the saucepan with a brush dipped in water to remove any sugar crystals.
3. 3
   Cover and boil for about 3 minutes or until a candy thermometer registers 245 degrees.
4. 4
   Beat egg whites with pinch of salt until glossy and peaked.
5. 5
   Slowly pour in syrup as you continue to beat the whites.
6. 6
   Beat until cool and frosting is soft and fluffy.
7. 7
   Fold in vanilla.