Labskaus is a traditional sailor's dish that is popular in Berlin. It is made from a mixture of corned beef, potatoes, onions, and beetroot. The ingredients are mashed together to form a thick and hearty stew. Labskaus is typically served with a fried egg on top and a side of pickles. It is a unique and flavorful meat dish that is a must-try for adventurous eaters in Berlin.