Don't Wait for Hot Pots to Cool Before Refrigerating, Experts Warn
Translated & summarized from Kikar HaShabbat by baba
Israeli and international food safety experts warn against letting large pots of cooked food cool at room temperature before refrigeration, as this can lead to dangerous bacterial growth. While it's a common practice to avoid putting hot food in the fridge, major health organizations like the FDA state it's permissible if done correctly. The key is to divide large quantities into smaller, shallow containers for rapid cooling within two hours of cooking to prevent foodborne illnesses.
The story in 6 lines · by baba
- Leaving large pots of cooked food to cool at room temperature poses a significant bacterial growth risk.
- Major health organizations like the FDA permit refrigerating hot food if done correctly.
- Large food quantities should be divided into smaller, shallow containers for rapid cooling.
- Perishable food must be refrigerated within two hours of cooking, or one hour in high heat.
- Rapid cooling methods include using shallow containers or a cold water bath.
- Bacterial growth can occur without altering the food's smell, color, or taste.
A common kitchen practice of waiting for a large pot of cooked food to cool down before placing it in the refrigerator may be a dangerous mistake, according to food safety guidelines. While many believe putting hot food directly into the fridge can damage the appliance or spoil other food, experts emphasize that leaving cooked food at room temperature for extended periods poses a greater risk of bacterial growth.
Cooked food is not immediately safe from bacteria. As food cools, it passes through a temperature range where certain bacteria can multiply rapidly. In large pots, the center can remain in this danger zone for a significant time, even if the outside feels cool to the touch. The key issue is not how hot the pot is, but how long it takes for the food's core temperature to reach a safe storage level.
Contrary to popular belief, major food safety organizations like the U.S. Food and Drug Administration (FDA) and the U.S. Centers for Disease Control and Prevention (CDC) state that hot food can be refrigerated. However, they stress that large quantities should be divided into smaller, shallower containers to facilitate rapid cooling. Israeli and British health authorities also recommend quick cooling before refrigeration.
The general rule, emphasized by the FDA and CDC, is that perishable food, including leftovers, should be refrigerated within two hours of cooking. In hot weather (above 32 degrees Celsius), this window shrinks to one hour. Israeli health guidelines also highlight rapid cooling to around 4 degrees Celsius within two hours.
To safely cool large batches of food, such as soup or stews, it is recommended to transfer the food into several wide, shallow containers. This increases the surface area, allowing heat to dissipate more quickly. An alternative method for pre-cooling is to place the pot in a larger container filled with cold water, stirring the food occasionally and changing the water as it warms. It is also advised to ensure proper air circulation within the refrigerator and avoid overcrowding it with hot items. Furthermore, when transferring hot food to containers, it's crucial to use containers designed for high temperatures.
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