2/3 c. cocoa
3 c. sugar
1/2 tsp. salt
1 1/2 c. milk
1/4 c. butter
1 tsp. vanilla

Mix cocoa, sugar, salt, and milk to boil on high. Reduce heat to medium and continue to boil. The mixture will rise high in pan then stabilize. To test drop a small amount in glass of cold water, if ball forms, take off stove add vanilla and butter. Let stand to cool, mix until thickens put in buttered pan and cool.