Safe Handling of Leftovers in Foodservice Operations
In any foodservice operation, leftovers are inevitable. After managing a family-style restaurant, where all-you-can eat sides were offered to almost every table, and having banquet space in-house, I became well versed in how to handle leftovers. It does not matter if it is uneaten portions from a buffet, prepped ingredients, or food returned from a catered event, proper handling of leftovers is critical to prevent foodborne illness and making sure you abide by the food safety requirements outlined in the food code.
Mishandled leftovers can quickly become a breeding ground for bacteria, leading to serious health risks. While experts are unable to pinpoint the exact number of foodborne illnesses attributed to leftover food specifically, it is thought to be relatively high due to the complex nature of how the food is handled. Here are some pointers on how to handle leftover food in your operation.
…mishandled leftovers can quickly become a breeding ground for bacteria, leading to serious health risks…
To Re-Serve or Not?
The first question to ask is if leftover food can be used again. While it is obvious to most, plate waste and food placed on the table that is not pre-packaged should never be served again. For example, dinner rolls served in a common breadbasket should be tossed. But those oyster crackers that are pre-packaged and unused can technically be reserved if the original package is intact. The safest practice is not to re-serve any food that has been exposed to customers, except for sealed, protected items, or properly stored prepped food that has never left a controlled environment.
Cool Quickly
One of the biggest risks with any food that has been leftover, or really any food that is cooked, cooled, and then reheated for later service is when food stays in the temperature danger zone for too long. To minimize this risk, leftovers must be cooled rapidly. Large portions should be divided into shallow containers to allow faster heat loss. Use ice baths, blast chillers, or refrigeration to bring the temperature down below 41°F or below within two hours of cooking.
Store Properly
Storing food property is key to preserving quality and safety. Leftovers should be stored in clean, food-grade containers with tight-fitting lids. Label each container with the date and time the food was cooked and stored. First in, first out principles should always be applied. Be mindful of how you store food in your reach-in or walk-in coolers, making certain you store raw and cooked foods separately to prevent cross-contamination. Avoid overpacking refrigerators or freezers, which impedes air circulation and can prevent food from cooling properly.
Reheat Safely
When it’s time to serve leftovers, they must be reheated to an internal temperature of 165°F for at least 15 seconds. Use food thermometers to ensure accuracy, especially with thick items or mixed dishes. Reheat only the portion that will be used immediately; repeated reheating increases the risk of bacterial growth and diminishes food quality. Do not reheat food in steam tables or slow cookers, which are not designed to heat large quantities of food quickly.
Train Staff and Enforce Protocols
As we have discussed in this blog countless times before, food safety starts with well-trained and knowledgeable staff. Ensure all employees understand proper cooling, storage, reheating, and labeling procedures. Regularly audit practices, provide refresher training, and encourage a culture of food safety accountability.
By being selective of the food we keep and re-serve, cooling food that we do keep quickly, reheating properly, and training staff, your operation can reduce waste while maintaining the highest food safety standards. Remember: when it comes to leftovers, safety always comes first.
Don’t forget to check out our most recent SafeBites Webinar, “Leveraging Technology for Better Food Safety Compliance and Monitoring!” If you have any topics you’d like to have addressed in 2026, please reach out and let me know. Risk Nothing.
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Don’t Compromise: Clean and Sanitize
The subject is cleaning and sanitizing. Chefs, food service directors, managers and staff try to practice safe food-handling at every turn in the kitchen. Don’t let that effort go down the drain by slacking off on the many aspects of sanitation. That includes dish and ware-washing techniques (pots, pans, equipment), and cleaning all the areas that give us that “neat as a pin” appearance in your customers eyes. Customers seldom fail to bring that soiled silverware or glass with lipstick on it to the attention of the manager or wait staff. Improperly cleaning and sanitizing of food contact equipment does allow transmission of pathogenic microorganisms to food and ultimately our customer.
The Route to Safer Fresh Fruits and Vegetables
Although fruits and vegetables are one of the healthiest foods sources in our diet, we continue to have foodborne disease outbreaks of significance from produce, sometimes affecting large groups of people in multiple states because of their wide distribution. The CDC estimates that fresh produce now causes a huge number of foodborne illness outbreaks in the United States. Produce needs our continued food safety efforts at the restaurant level as well as at the stages in agricultural production. Occasionally, fresh fruits and vegetables can become contaminated with harmful bacteria or viruses, such as Salmonella, E. coli 0157:H7, Norovirus, and Hepatitis A. This contamination can occur at any point from the field to our table. If eaten, contaminated fruits and vegetables can cause foodborne illness.
Be Cool, Chill Out, Refrigerate Promptly!
The Cold Chain -- Keeping perishable foods at proper cold holding temperatures (between 28°F and 41°F maximum or 0°F for frozen food) from your food producers / manufacturers to your customers has to be one of our strongest links to safe food and high quality. Sometimes that is referred to in the food industry as “maintaining the COLD CHAIN”. Any slip ups in the cold chain, and we have a weak link. Most all of our state food regulations require 41°F as a cold maximum, but colder is a “best practice” policy to maintain.
Cutting Board Safety
Everyone knows to prepare food only on a clean and sanitized surface. Everyone also knows not to prepare food on a surface previously used to prepare any type of uncooked meat—cross-contamination. But does everyone know what this clean, sanitized, uncontaminated surface should be made out of? Or how cutting boards should be cared for?
