6 tbsp. plain flour
3 tbsp. cocoa
2 c. sugar
2 egg yolks
4 c. milk
1 tsp. vanilla
1/2 stick butter
1 box vanilla wafers

Mix flour, cocoa, and sugar in bowl. Mix egg yolks and milk in boiler pot. Then add flour mixture. Add 1 teaspoon vanilla and 1/2 stick butter. Cook on medium heat until thick. Pour over one box vanilla wafers.