At that temperature, the food will continue to cook and dry out, so you don't want to keep it at that temperature for very long or the quality might be negatively affected. Pathogens don't grow at those temperatures, so it would be safe even if not very tasty.
If your freezer is above 5 degrees Fahrenheit, food can begin to spoil within a few hours to a few days, depending on the type of food. While freezing can slow down bacterial growth, temperatures above 0 degrees Fahrenheit will not keep food safe indefinitely. It's best to discard any food that has been stored in a freezer above 5 degrees for more than two hours to ensure safety. Always check for signs of spoilage before consuming.
90 degrees Celsius is very hot, withing about 8 hours any food subject to that temperature will be cooked and sterile. Further keeping at that temp will see the food desiccate.
You should keep food within the safe zone temperatures. The safe zones are above 160 degrees and below 40 degrees to keep bacteria out. If kept in the refrigerator it will stay good for 3 to 4 days.
Bacteria can begin forming on food if left in the danger zone temperature after an hour. The danger temperature is below 145 degrees and above 45 degrees. So your answer is an hour.
as long as u want
Raw hot food should be cooked at or above 80 degrees C for 8 mins (which kills all germs), after that, hot food should be served strait away, it does not matter what temp the food is after it has been served as long as it is eaten within 20 mins (and does not get below 45 C), then you need to reheat the food for 4 mins at or above 60 C or cool quickly to be stored in the fridge or freezer.
60 degrees north long
Rice (or potatoes or pasta or whatever cooked starch) has carbohydrates (food) and water. That is two out of three (the third being temperatures between 40 degrees and 140 degrees) to allow bacteria growth. Most home refrigerators do not keep foods below 40 degrees reliably, so after three days you should either discard, or re-cook to above 170 degrees, or freeze (and recook when you thaw it) any food. Most food-borne illness is caused in the home, not in restaurants, because people forget how long they have stored things or don't wash them properly before eating.
it depends on the food you put into the foil
When you are comfortable! I know people that wear them all Winter long.
The best fresh food temperature is 40 degrees Farenheit. If it's any colder then the food is likely to freeze, and any warmer then the food won't keep as long or as safely.
As long as the shellfish is kept at or below 45 degrees, it will last for about 5 days.