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Cooked food should be held at least 140 degrees. Food should be consumed as soon as possible after cooking to slow the growth of bacteria. This is what refrigeration does. Generally speaking most hot foods will not have excessive bacterial growth in less than two hours. However this is accounting that the food was at a proper temperature at the beginning of that time. Also, bacterial growth can be greatly increased due to other improper handling (i.e. introduction of filth from hands ect).

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14y ago
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13y ago

If it is in a unopened shelf stable can, at least a couple of years.

If you prepared it and have leftovers, then it should be refrigerated within about 2 hours.

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Q: How long can mashed potatoes sit at room temperature?
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