Hannover is not rich in superlatives, so being the city with the oldest German Vegetarian Restaurant should certainly mean something! They are now consequently vegan and they are a restaurant that should not be missed in Hannover.
I've been to the Hiller a few times, and I must say that they have come a very long way from a nice, but a bit boring vegetarian restaurant to a place where you can indulge in delicious vegan food.
I went for their dinner menu, consisting of a very fruity and well made tomato soup, a delicious main dish of potatoes, mushrooms and "pepper steak" and an apple pancake with soy ice cream. All of these dishes were wonderful, and worth the price (EUR 18 for this menu)Pros: sophisticated and delicious food, friendly staff
Cons: a bit pricy