I don't know if La Potinière is open for lunch, but I'll check. The address is: Herzogstraße 23, Tel.: +49 (0)211 / 37 49 61 Another option for lunch would be one of the "breweries" downtown with local food. I would recommend "Im goldenen Kessel" - Bolkerstrasse "Füchschen" - Ratinger Strasse "Im Schlüssel" - Bolkerstrasse