Boiled Seafoam Icing - cooking recipe

Ingredients

1 cup sugar
1/2 cup water
2 egg whites
1/2 teaspoon vanilla extract

Preparation

Boil sugar and water over low heat until syrup spins a thread. (or get a glass of water, drop syrup into the water, it's done when it solidifies immediately after. This is very important otherwise it won't work).
Take out of the flame immediately otherwise it will turn brown.
Pour very slowly onto stiffly beaten whites and beat until smooth and stiff enough to spread.
Add flavoring.
Spread on cake.