A truly moreish dish that we sampled in Berlin was flammkuchen.
Flammkuchen is like a super duper skinny thin light as a feather pizza base with a choice of various toppings. The main difference that I noted between this and a pizza is that this is a lot lighter and completely lacking in tomato base.
We chose a spinach and tomato with cheese flammkuchen that was so fresh and tasty and a bacon and cream cheese one that was also delicious.
I believe this is also known as tarte flambee in France.