Some of you may have seen the 1957 movie Quatermass 2. My favourite scene occurs in the following video, from 14:50. http://www.dailymotion.com/video/xescj1_quatermass-2-movie-part2_shortfilms But what exactly was that "food"? Well, I think I may have found the answer. http://www.youtube.com/watch?v=QgtqHQeOO1A Bon appetit!
Must admit I never troubled myself about the "food". But I enjoyed the film. A lot of it was shot at the oil refinery where I once worked (now a new container terminal) on the Thames.