HOW, oh how, do the fantastic scientists at the police lab KNOW what the vic had at his last meal, esp if eaten several hours before? After all, we do (mostly) chew, not inhale) food, so it's mush, rather than identifieable chunks, such as peas and carrots. That mush has saliva which already starts to break it down before it goes into our tummies, then the what is it, hydrochloric acid, or is it sulphuric acid, that further turns it into nutrients for our bodies. The stomach churns, turns, and digests that goo, so how do they KNOW he had a certain meal, probably from that high class restuarant or greasy spoon?
Okay, the greasy spoon might be identifiable, but...?