Quick Fudge Icing

Description
Betty Crocker's Cook Book for Boys and girls, out of copyright

Ingredients

 * 1 cup sugar
 * ¼ cup cocoa
 * ¼ cup butter
 * ½ cup milk
 * 2 tablespoons light corn syrup
 * 1½ cups sifted confectioners' sugar
 * 1 teaspoon vanilla

Directions

 * 1) Mix sugar and cocoa in saucepan. Stir in butter, milk, corn syrup.
 * 2) Bring to boil. Boil for 3 minutes, stirring occasionally. Take out spoon and set pan in cold water. When you can hold your hand on the bottom of the pan the syrup is cool enough.
 * 3) Then, stir in 1½ cups confectioners' sugar and vanilla. You may need to add an additional ½ cup of confectioners' sugar.
 * 4) Stir the icing until thick enough to spread. Add more confectioners' sugar or milk if needed.