The University mensa is close by (1 minute walk). Vouchers for lunch (buffet) can be purchased at the registration desk. Note that the mensa does neither accept cash nor credit cards, only vouchers.
Alternatively, there are several restaurants/cafes in the area:
Restaurants in the area:
Bräustradel Mathematicon
Typical Bavarian restaurant close to the institute.
Berliner Str. 41
Bistro Bellini
Small bistro close to the institute.
Im Neuenheimer Feld 370
Restaurant Olive
Mediterranean restaurant in 15 min. walking distance.
Klausenpfad 36
Café Botanik
Bistro in the canteen building.
Im Neuenheimer Feld 304
Bakery Görtz
Bakery and coffee shop in Mathematikon Building Complex.
Berliner Str. 49
Bakery Kohlmann
There is a bakery next to Bellini.
Im Neuenheimer Feld 370