Milk is drained. Sweetened with sugar and divided into three equal parts. Separate the egg yolks from the whites. In one part, add the egg yolks, egg whites and the other in the third cocoa. Beat nice to gain white, yellow and brown. In transparent bowls put a spoonful of white mixture to it from yellow to brown it. The top line on the white put brown, brown on yellow, yellow on white, etc. chessboard. Decorate optional. Store in refrigerator.