lukesdad said:
All food poisoning bacteria need 3 essentials to multiply time temp and moisture remove one and you reduce the risk. On average they reproduce every 20 mins. As FF has allready stated spores (bacteria in jackets if you like) and toxins cannot be destroyed by boiling. So to be safe here you need to remove one essential other than temp.
This is why rice for example needs to be cooled very quickly if it is to be reheated (not something Id advise).
Along with rice, poultry is dodgy as it is closely associated with salmonela.
Fresh fish is probably as safe as anything, as long as it has not been cross contaminated by either another foodstuff or humans.
Cross contamination is by far the most common form of food poisoning in the U.K.
Agreed.
The real need here is being able to either keep food hot enough that bacteria can't grow (multiply) or cool it down quickly enough to a cold temperature where they can't grow. It's the nice warm environment in between that is dangerous.
Buffet food can be a hazard as often it sits around for a long-time at a warm enough temperature. Sausage rolls, Vol-Au-Vents should be fine and safe straight from the oven but should be quickly cooled, leaving them out in a warm room for a while could spell disaster if they become cross contaminated whilst other buffet items are being prepared.
Home-made soups, curries, stews etc. should all be cooled quickly if you intend to reheat them.
Also remember there are 2 types of food poisoning bacteria, those that infect and those that intoxicate. Salmonella and E.coli for instance are infectious, i.e you need to eat them alive and in quite high numbers, once growing inside you they make you ill, fortunately they don't grow in the cold and are easily killed by heating. The B.cereus in rice, and C. botulinum in cans are both heat resistant and produce toxins in the food when they grow, so although you may kill the bacteria by reheating, the toxins remain. Such toxins are very powerful and only small amounts are required for acute food poisoning, or with Botulism, death.
Some good info here...
http://www.northdevon.gov.uk/index/...giene_and_safety/nonlgcl_food_safety_tips.htm