Food Safety in the Age of Meal Kits and Online Groceries

— Dr. Gülsün Akdemir Evrendilek

Meal kits and online grocery delivery services are changing how families cook and eat. These services save time, reduce trips to the grocery store, and make it easier to prepare healthy meals at home. But because food is shipped through the mail or delivered by couriers, it may spend hours in transit or on your doorstep.

Perishable items like meat, poultry, seafood, eggs, and dairy are at the highest risk for growing bacteria that cause foodborne illnesses if not kept cold. Fortunately, by using the steps below, you can enjoy the convenience of meal kits and online groceries and keep your family from getting sick.

Step 1: When the Box Arrives

• Open immediately. Packages are only designed to stay cold for a limited time. The faster you open and store food, the safer it will be. Letting a box sit unopened increases the chance that food will reach unsafe temperatures.
• Check for insulation and cooling. Safe deliveries should include gel packs, ice packs, or dry ice. If there aren’t enough cooling packs or if everything feels warm, the food may not be safe to eat.
• Do the touch and temperature test. Meats, seafood, and dairy should feel refrigerator-cold. Better yet, use a food thermometer. Perishables should arrive at or below 40 degrees F. Anything warmer may be unsafe.
• Inspect packaging carefully. Look for leaks, broken seals, dents, or swollen containers. Damaged packaging can allow bacteria in or signal that foods were not handled properly. If something looks suspicious, don’t eat it.
• Separate high-risk foods. Place raw meat, poultry, and seafood into sealed plastic bags or containers before storing. Keep them on the bottom shelf of the refrigerator so juices cannot drip onto other foods.

Step 2: If the Delivery Was Delayed

• Is the food still cold (less than 40°F)? If food feels refrigerator-cold, it is safe to refrigerate, freeze, or cook immediately.
• Is the food partially thawed but icy? Frozen items that are soft around the edges but still contain ice crystals are safe. Refreeze them right away or cook as planned.
• Is the food warm or room temperature? If perishable foods have been above 40°F for more than 2 hours (or for more than 1 hour if the outdoor temperature is above 90°F), bacteria may have multiplied to unsafe levels. These foods should be thrown away, even if they look or smell fine.
• Trust your instincts. If something seems off—like an unusual odor or color—it’s better to discard the food than risk illness. Remember: when in doubt, throw it out.

Step 3: Storing Meal Kits and Groceries Safely

• Refrigerate perishables first. Always put away meats, seafood, dairy, and pre-chopped vegetables before unpacking dry goods. A few minutes on the counter may allow bacteria to grow.
• Freeze foods you won’t use soon. Many meal kits expect you to cook proteins within 3–5 days. If that doesn’t fit your schedule, place them in the freezer immediately to prevent spoilage.
• Keep raw meats separate. Cross-contamination is one of the most common causes of foodborne illness. A drip of raw chicken juice onto salad greens is enough to spread harmful bacteria. Store meats in leak-proof containers or plastic bags.
• Pay attention to dates. Check “use-by” and “best-by” dates carefully. These indicate how long foods remain safe and at peak quality. Write the date you opened the packages, so you know when to use them.

Step 4: Cooking and Preparing Safely

• Wash your hands thoroughly. Use warm, soapy water for at least 20 seconds before and after handling raw foods. Hands spread bacteria faster than any other surface in the kitchen.
• Keep cutting boards and utensils clean. Cutting boards, knives, and counters should be washed with hot, soapy water after contact with raw meat, poultry, or seafood. Consider using separate cutting boards for raw meats and ready-to-eat foods.
• Read cooking instructions carefully. Some kits provide partially cooked items, like parboiled grains or pre-cooked proteins. Always follow the directions, but double-check doneness with a thermometer. Harmful bacteria are only destroyed when foods are cooked hot enough. Always use a food thermometer, since color is not a reliable indicator.
  • Poultry: 165°F (74°C)
  • Ground meats: 160°F (71°C)
  • Fish: 145°F (63°C)
  • Leftovers: 165°F (74°C)
• Avoid cross-contamination. Never reuse plates, utensils, or boards that touched raw food without washing them first. Keep raw and cooked foods separate from start to finish.
• Watch for allergens. Sauces and spice blends may contain common allergens like soy, nuts, or dairy. Always review labels if anyone in your household has food allergies.
• Refrigerate leftovers promptly. Place cooked foods in the refrigerator within 2 hours (or within 1 hour in hot weather). Divide into shallow containers to help them cool faster and stay safer.

Meal kits and online grocery deliveries are a modern convenience that can help families save time and eat healthier. By opening boxes quickly, checking for coldness, storing foods promptly, and cooking to the right temperatures, families can safely enjoy the benefits of food delivery without increasing the risk of foodborne illness.

Food safety doesn’t have to be complicated, just consistent. Small daily steps will protect your family and build lifelong healthy habits.

Resources

• Food Keeper App (Food Safety.gov)

Author

Dr. Akdemir Evrendilek is an Associate Extension Professor and Seafood Technology & Food Safety Specialist with expertise in food safety, food microbiology, and foodborne pathogens. She provides training in seafood HACCP, meat and poultry HACCP, and food processing sanitation, helping industry professionals and students strengthen compliance and safety practices. Her research focuses on innovative food processing technologies such as pulsed electric fields (PEF), high-pressure processing (HPP), ozone, UV-C, and ultrasonication, as well as biosensor technologies for rapid pathogen detection and PFAS mitigation in seafood and food systems. She also works on food quality, product development, waste valorization, and predictive microbiology, with extensive experience implementing GMP and SSOP systems in the food industry.