Most food used at fast food restaurants is frozen, so it is not actually fresh. How long it is frozen before it is used is not known. After food are cooked, there is a hold time for how long it can be kept under the warming lights. Foods like lettuce that cannot be frozen usually contain preservatives to make it look fresher longer, but it is not known for how long.
it depends on the food you put into the foil
It should keep fresh as long as it stays in a fridge or kept cold until you want to eat it.
Smoked fish does. of stay fresh long after it is opened. It is recommended that after being opened and refrigerated it not be kept or consumed for more than three days.
It will stay fresh for some hours. Not too long. So it depends how long the fridge been off. Too long is bad.
3 to 5 days.
So that food can be conviently stored and preserved in long term.
I get sick on long car journeys, but can survive plane and train journeys.
Canned goods, dried foods like dried beans, dried fish. But if you keep in a refrigerator, the food will be ok for a period of time especially frozen foods.
keep it in the refrigerator, and when you take it out, you can put it in a toaster or toaster oven
Through their refrigenerater.
Yes, as long as it has been cooked and if kept, has been refrigerated.