The "Danger Zone" (40 °F-140 °F) Cooking; Storing Leftovers; Reheating; Cold Storage Temperatures; The "Danger Zone" (40 °F-140 °F) Bacteria grow most rapidly in the range of temperatures between 40 ° and 140 °F, doubling in number in as little as 20 minutes. This range of temperatures is often called the "Danger Zone." More @Wikipedia
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