4 tbsp. butter
1 c. milk
3 c. sugar
1/2 c. cocoa
1/4 tsp. cream of tartar
1 tsp. vanilla

Melt butter and add milk and heat to boiling. Combine sugar, cocoa, and cream of tartar. Add to heated milk and butter. Stir with a wooden spoon until mixture boils. Lower heat; cook to a soft ball stage. Let stand until lukewarm. Add vanilla. Stir until candy is creamy. Pour into 8 inch square pan. Cut while still warm. Makes about 1 1/2 pounds.