Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     2/3  cup           cocoa
   3      cups          sugar
     1/8  teaspoon      salt
   1 1/2  cups          milk
   4 1/2  tablespoons   butter
   1      teaspoon      vanilla

Preparation:

Combine cocoa with sugar and salt. Add milk; bring to a boil, stirring frequently. Cook to 232 degrees, or until soft ball stage when dropped in cold water. Remove from heat; drop in butter. Cool to lukewarm. Add vanilla and beat until mixture thickens. Pour into buttered pan and cut in squares when cool.