Imagine the following scenario. You make some food, and put part of it in the fridge relatively quickly (often before I eat, so I save e.g. half for later).
Some time later, usually dinner the same day, or either lunch or dinner the next day, I re-heat that food.
So far, so good, I assume.
Now, the question is: what if I re-heat it (first time) for dinner, but it gets cold while eating, and I re-heat it the second time perhaps 20-60 minutes later?
A, is it safe at all, and B, if it can be, do I have to heat it to cooking temperature yet again, or can I simply heat it so it's pleasant to eat, this second time? I always heat it properly the first time around.