I currently live in Hamburg, not that far away from the Danish border. One thing I notice is that you find a lot of Scandinavian products here. Cheeses of various kinds, Rødgrød (red berry sauce), and Flæskesvær (fried pork rind) are only a few. It probably comes as no surprise that I felt I wanted to try a Danish recipe for buns.
Danish people are probably as obsessed with bread as are Germans. They have perfected the simple cold cuts on a delicious slice of bread, their Smørebrød is known worldwide. The buttered rye bread is crowned with a creative topping, this can be a cold cut, but ranges from vegan to extremely meaty options. I was fortunate enough to try Smørebrød when I was in Copenhagen and can highly recommend it. If you have the chance, try it, I find it extremely delicious (see also pictures).
Smørebrød as found in Copenhagen