Aubergine.

[George the Pigman]

I have grown them in the greenhouse for several years. If you get them started early they should grow OK and get pretty big. They are prone to spider mite so keep them misted. Last year was a disaster for me though as they produced lots of flowers but no fruit. The reason was the desperate summer with very few pollinating insects. I found out too late I needed to hand pollinate them!
I have tried growing them outdoors with no success. Perhaps if your down South with a south facing wall you may have a chance.
Black Enorma is a good variety.

[George the Pigman]