One downside of eating in restaurants is that a bowl of soup might seem like one of the safer options because it is hot. However, what happens before it gets to your table does count. You can’t tell whether each step of the soup’s preparation has been done safely if it has been cooled, reheated, and stored for later serving.
Cooking Office helps readers understand the food-safety practices that are important when eating out. Temperature is one aspect of soup that the customer can observe.
Check How Hot the Soup Is
The 2026 FDA Food Code states that time/temperature control for safety foods must generally be maintained at 135°F or higher in restaurants and other food-service establishments. This goes for cooked food that’s sitting out as well as food you’re keeping warm for serving.
From the table, you can’t tell how long a pot of soup has been held hot in a hot-holding unit, or whether it remained at the required temperature. This is also true with buffet-served soup.
ADVERTISEMENT
Why the Temperature Range Matters
The USDA consumer guidance defines 40°F to 140°F as the Danger Zone, where bacteria can multiply quickly. The FDA’s Food Code requires TCS food to be held at 135°F or above in food establishments.
The bottom line: when serving a hot soup, it should be hot. A lukewarm bowl is warm but not hot.
What Can Go Wrong Before Serving?
The final temperature is not the only factor in determining food safety. There are several steps from the time soup is prepared until it comes to the table: cooling, storing, reheating, and hot holding.
Foods can become contaminated with toxins produced by certain bacteria under unsafe food-handling conditions. Some bacteria, such as Staphylococcus aureus, can produce heat-stable toxins that are not destroyed by cooking. Heating it back up won’t fix a soup that was left out too long. Some of the toxins bacteria produce survive even boiling.
What Can You Check at the Table?
Appearance and smell are not reliable indicators of whether soup has been stored too long. It’s also impossible to determine the temperature of a soup from the steam itself.
One thing you may notice is whether the soup is hot enough or just lukewarm. If it’s lukewarm, and the server doesn’t replace it, you can ask for a replacement.
Who Should Be Extra Careful?
Customers can’t see everything that goes on behind the kitchen door, but following the Food Code helps minimize food safety risks in restaurants. Adults 65 and older are among those at higher risk of severe illness from foodborne disease, so they should pay particular attention to temperature.
If your soup comes out lukewarm, it’s fair to ask for a warmer cup.
FAQs
How Long Can Soup Sit Out at Home?
According to the USDA, the maximum time for perishable food to be out of refrigeration is two hours or one hour if the temperature is higher than 90°F. Keep soups hot (at 140°F or higher when hot-holding) before serving.
Does Boiling Make Old Soup Safe?
ADVERTISEMENT
No. Boiling soup does not ensure its safety if it has not been handled properly or has been held at unsafe temperatures for an extended period. Certain toxins from bacteria are heat-resistant, so proper handling during preparation, storage, and use remains critical.
ADVERTISEMENT