There's also an added bonus if you have vegetables sticking out of the curry. They'll soon get covered in nice greeny-white patterns, not only adding to the overall appeal, but you'll get even MORE for your money. Think how large your curry'll grow after a month!
I think there could be an invention in the pipeline here. All you need to do is to find some friendly bacteria and a means of keeping the toxic stuff at bay - then you'll be quids in. Imagine - food that "reproduces itself"!!!