This classic Polish dessert is a must at Christmas time, but enjoyed and loved by many throughout the year. Made with fragrant yeast dough and a generous amount of poppy seed filling. The filling is a delectable mixture of cooked and ground poppy seeds, honey, vanilla, orange and lemon peel, walnuts and raisins. The top of the cake is glazed with powder-sugar icing. Once you try it you will be hooked forever, the aroma and taste is unforgettable. SIXTEEN INCHES LONG, SERVES 10 TO 12.