Perishable sandwich fillings need temperature control
Meat, poultry, fish, eggs, many cheeses, cooked vegetables and prepared salads should not sit at room temperature for extended periods. Start with cold ingredients, use an insulated bag or cooler and return leftovers to refrigeration promptly.
Packed lunches
USDA guidance recommends an insulated lunch bag and at least two cold sources for perishable bag lunches, such as freezer packs or a frozen water bottle. Store the lunch in a refrigerator when one is available.
Deli meats and Listeria
Deli meats and other ready-to-eat deli foods can be contaminated with Listeria, and refrigeration does not kill it. CDC identifies pregnancy, age 65 or older and weakened immunity as higher-risk situations. People in those groups are advised to avoid deli meat or heat it to 165°F (74°C) or until steaming hot before eating. Individual medical needs should be discussed with a qualified health professional.
Prevent cross-contamination
- Wash hands before food preparation and after handling raw meat or poultry.
- Use clean boards and utensils for ready-to-eat bread and vegetables.
- Keep juices from deli packages and raw ingredients away from other foods.
- Clean refrigerator shelves and surfaces that contact leaking packages.
- Use separate utensils and trays when allergen cross-contact is a concern.
Parties and picnics
Serve smaller platters and replenish from the refrigerator or cooler. Keep cold foods on ice when appropriate. Do not rely on appearance or smell to decide whether food held too warm for too long is safe.
Official sources
- FoodSafety.gov: four steps to food safety
- USDA FSIS: keeping bag lunches safe
- CDC: deli foods and Listeria
- USDA FSIS: leftovers and food safety
This page is general information, not medical advice. Official guidance can change; use the linked sources for current details.