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Why should we not re-heat some food?

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DoctorBeaver
I had one of those ready-made curries the other day & in bold letters it stated "DO NOT REHEAT". Why not?

When I cook a curry, bolognese, casserole, etc I usually cook enough for 2 dinners so I re-heat the leftovers the next day. I've never had a problem with doing that. So why should some ready-made meals not be re-heated? Is it an advertising ploy to make us buy more or are there genuine health implications?
ocalhoun
DoctorBeaver wrote:
Is it an advertising ploy to make us buy more or are there genuine health implications?

In large part, probably advertising.
But, it might be that it will not taste nearly as good reheated... some foods just don't do that well.
Also, it might be more like 'do not reheat the container' then 'do not reheat the food'... perhaps the container it is sold in cannot withstand multiple cookings without breaking (potentially causing burns) or releasing toxic chemicals into the food...

Or perhaps it is a liability issue. If, at some point, they were sued because of a situation that involved reheating it, they might put that on the label to prevent that lawsuit from happening again, because if it did, they would only have to point out that the person was not using it according to the directions.
deanhills
DoctorBeaver wrote:
I had one of those ready-made curries the other day & in bold letters it stated "DO NOT REHEAT". Why not?
Could be increased risk of spoilage due to microorganisms. If you refreeze and rethaw, you've subjected the food to double the microorganism growth. Most dangerous foods would be meat, chicken, fish, turkey, flesh foods.

Also, one would not know what kind of freezing the product has had before it got into your freezer. It could have defrosted before in a faulty store or truck freezer. I would not take chances if I were you. If you think you can't use all of it, instead of defrosting the whole packet, I would cut only the section I need to cook, and keep the rest in the freezer.
c'tair
I always thought this had something to do with heating and cooling of fats and some other substances - that reheating did something mostly to the oils, maybe burns them or something.. Never really noticed anything bad with reheated food, and I usually eat a single meal for 3 days or so Razz
Bikerman
Certainly,with some lipids,reheating can be a problem. Yoghurt, cream, even milk, for example can easily 'split' during heating (ie the fats separate from the solution - rather like separating curds and whey to make cheese). It is visually unattractive and can also change the taste and texture in the mouth.
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