Stollen, also known as weinachtsstollen or christstollen, originated in the 15th century as a plain food for the Advent fasting period in Dresden. Just before the 16th century, requests for Pope Innocent VIII to allow the use of butter in the cake were finally answered. Since then, this holiday cake has gradually become more elaborate with added raisins and candied fruits. When the cake is still warm, it's brushed with butter and rolled in powdered sugar. If you want to buy stollen from its original town, look for the gold seal—only 120 bakeries are authorized to call it authentic Dresden stollen. Otherwise, try this recipe that also uses marzipan.