Markthalle Tegel
M-F 8AM-7PM, Sa 8AM-4PM
two minutes from U-Bahn Alt-Tegel
Indoor food market. Fantastic fresh foods at local prices, including bakers, deli counters, and greengrocers.
There is a nice shopping mall located in Tegel, called Borsighallen. It's converted locomotive assembly halls turned into a typical medium sized Berlin mall with every shop you'll need. Additionally there is a cinema and other entertainment stuff.