There are many ways to sample German cuisine. You can go to a restaurant of course, but there are some other more authentic ideas, where you can not only try the food, but learn how it’s prepared too. How about a home dinner prepared by a local? You get to enjoy both the meal (and there are many great German dishes like Spätzle, Sauerbraten or Rouladen) and the company of Berliners.
There are also cooking classes — which are a great way to spend a couple of hours learning how to cook from scratch — the Berlin way. If you’re after things to do in Berlin in 3 days — start with food!