Mentioned Lebensmittel in Mitte in Rochstraße a while back. Here are some pictures from the place. Go for good and solid South-German food, a coffee in between shopping (try their apple juice!) or to buy some of their feinschmecker delicacies.
The whole area between Tucholvskystraße and Rosa Luxemburg straße (South of Torstraße) is great for shopping with lots of galleries in especially Torstraße, Auguststraße and Linienstraße for you art lovers.
Oh, it looks so nice and organic! Like anything in that shop would be good for you!