Sorry, boring.
I have a jugful of leftover gravy, it's ready made from a plastic carton rather than granules.
Am I right in thinking that it's probably not a good idea, seeing as it was hot once when made by the factory, then reheated for the first time yesterday, meaning that reheating today would be it's second reheat?
I appreciate that that this sounds rather obvious, but I've had a few bad nights 