Quote from: parker21 on May 14, 2008, 10:07 PM
hi guys
if the reheating of the base is dangerous how did a chinese stock keep going for 50 years! reheating and cooling i'm sure,it was only when the family were moving i think to england, that they had to leave the stock!
They obviously used the stock fairly regularly (otherwise why keep it for 50 years), so what would have been happening is that most of the stock was regularly replaced, leaving very little of the old stock containing the toxins.
Quote from: parker21 on May 14, 2008, 10:07 PM
so why is it harmful to do the same for the curry base sauce has no animal fats( which forgive any ignorance) were more harmful than veggie fats (cholesteral and that)
For the most part, animal fats are worse for your health than veggie fats, however we're not talking about how harmful fats are, we're talking about bacteria releasing toxins into food.
Quote from: parker21 on May 14, 2008, 10:07 PM
hey maybe i'm wrong but if the sauce is cooled and then reheated then cooled and reheated again then provided it is not comtaminated with meat then surely the only toxins would be harmful would be the oil in it and i thought there was a certain amount of times that it can be reused!
Vegetable / Sunflower oil are not toxins. A toxin is a poison produced by a living organism, such as a bacterium.
Quote from: parker21 on May 14, 2008, 10:07 PM
most of the bases are or start out quite runny so the amount of oil would be minimal. am i wrong?
There's a lot of oil in many of the bases from this site, not that this has anything to do with the number of times it is safe to reheat them.
Here's some material of relevance:
"Managing Food Safety: A Regulator's Manual For Applying HACCP
Principles to Risk-based Retail and Food Service Inspections and
Evaluating Voluntary Food Safety Management Systems" (Center for Food
Safety and Applied Nutrition, July 2005)
FDA
"Potentially hazardous food that has already been reheated should not
be cooled and re-heated a second time, to avoid the food being at
temperatures that support the growth of pathogenic bacteria four times
(cooling, heating and re-cooling and re-heating). If pathogens were
present in the food, they could multiply to dangerous levels."
http://www.cfsan.fda.gov/~acrobat/hret3.pdf