IN June 1967, the future Queen Margrethe II of Denmark raised many eyebrows when she refused to accept a classic wedding cake from a local baker’s guild. The young princess and her fiancé instead ordered two overflødighedshorn, the cakes that she proclaimed to be “truly Danish.” Cornucopia-shaped cakes are baked the world over, usually around harvest-time. But the Danish cornucopia cake is more than an expensive celebratory cake; for many Danes, a major life event is incomplete without a serving of overflødighedshorn. This unique marzipan cake has a deep cultural…