Boiled Chocolate Icing

Directions

1. 1
   Combine cocoa, sugar and salt.
2. 2
   Add milk and bring to a boil, stirring often.
3. 3
   Cook to 232° or until a small amount forms a soft ball in cold water.
4. 4
   Remove from heat and drop in butter.
5. 5
   Cool to lukewarm.
6. 6
   Add vanilla and beat until mixture thickens slightly. Spread on cake.