(Proportions for 10 persons) Thoroughly beat yogurt, sour cream, and eggs, pour in milk, and add washed and dried raisins and a little salt. Mix as well as possible and bring to a boil, stirring, so that the milk curdles. Pour into a napkin to let the whey drain off. Mix the curds with sugar, tie up the napkin, and hang in the cold cellar to chill. To serve, turn out carefully onto a platter and pour on whipped sweet or sour cream with sugar and cinnamon.