- 1 cup sugar
- 2 tablespoons cornstarch
- 1/2 teaspoon salt
- 2 cups boiling water
- 1/2 teaspoon vanilla extract
- 1/4 cup butter
- In a small saucepan, combine the sugar, cornstarch and salt. Gradually stir in water until smooth. Bring to a boil; cook and stir for 15 minutes until smooth, thickened and clear. Remove from the heat; stir in vanilla and butter. Serve warm over cake.