It’s a scene that feels familiar in many households: a large pot of freshly made soup sitting on the stove, slowly cooling long after dinner is over. For some, it’s a long-standing kitchen habit passed down through generations. “Let it cool before putting it in the fridge,” many grandparents say. But when that cooling period stretches to eight or even ten hours, an important question comes up—is it actually safe?
The short answer is no, leaving soup out at room temperature for that long is not considered safe by modern food safety standards.Food
The concern comes down to how bacteria grow. When hot food begins to cool, it passes through what food safety experts call the “danger zone,” typically between about 4°C and 60°C (40°F to 140°F). Within this temperature range, bacteria can multiply rapidly, sometimes doubling in number in as little as 20 minutes. A large pot of soup, especially, cools very slowly, meaning it can remain in this temperature range for several hours.
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