1 lb. confectioners' sugar
1/2 c. cocoa
1/4 tsp. salt
1/3 c. boiling water
1/3 c. butter
1 tsp. vanilla

Combine sugar, cocoa and salt, mixing well. Add boiling water and butter. Blend. Add vanilla and beat until spreading consistency. If frosting is too stiff, stir in a few drops of hot water.