The traditional Danish New Year's Eve ring-shaped marzipan cake is called kransekage.
Kransekage consists of concentric rings made from a mixture based on marzipan, sugar, and egg white. The rings are baked, stacked into a cone or tower, and commonly decorated with white icing. Danish families often serve it with sparkling wine when midnight arrives.
The name means “wreath cake” in Danish, reflecting the ring construction. The closely related Norwegian form is called kransekake, and recipes and spellings can vary across Scandinavia. That similarity can make the Danish and Norwegian names easy to confuse.
Kransekage is associated particularly strongly with New Year's Eve in Denmark, although it can also appear at weddings, anniversaries, and other celebrations. It is not the same dessert as æbleskiver, which are spherical pancake-like pastries commonly linked with Danish Christmas customs.