In Denmark, "smørrebrød" is a classic! Give your delegates an authentic experience and let them learn how to build their own Danish sandwich.
Make lunch time a little differnt. Have the chef at your venue prepare all the ingredients needed to make the yummy Danish open faced sandwiches. Either let him instruct your participants in the various ways to build your sandwich or have recipes placed around on the tables. And watch as the participants talk, laugh and experiment with the recipes.
The exercise will both give your delegates a chance to laugh and network as they build their sandwiches and add som local spice to your event.