Years ago, Mark and Lard who were then BBC Radio 1 DJs did a stunt/experiment where they bought a freshly cooked pizza and left it on the floor opposite the BBC studios in Manchester. This was a hang out for tramps and beggers..
If memory serves me correct, it took about 7 minutes before a tramp actually started to eat it.
So, I wonder.. If a big jar of marmite (seal still intact) was left in an area of homeless people.. Would they eat it?
Or would that be just too cruel
