Years ago I went to a students flat and there was a chap there who had a
large crock pot that he kept permently in the oven.

His evening meal was to heat the whole thing up; adding meat and vegetables
to the top. Then to eat from the existing meat and vegetables already in the
bottom of the pot which had been cooked for the previous meal.

Apparently he kept the pot going in this fashion for months on end. He never
suffered from food poisoning.

But was there any chance of food poisoning happening seeing as he was
regularly rotating the food in the pot at oven temperatures (more or less
rotating I guess that is)?