Flammkuchen
The influence from nearby Alsace is clear in Freiburg. Flammkuchen is one of the main forms. It is very similar to pizza because it a flat piece of dough and stuff on top, a normal one will be anywhere between the size of a large plate to double that width. The dough is crispy and instead of a tomato based sauce it is a creme. It usually has cheese, onions and bacon, but differnet places will offer all sorts of different toppings.
Art Cafe & Cafe Legere are famous for the Flammkuchen. They are next to each other on a square near the university. Both places have outdoor tables and the square makes wonderful people watching.