Use a thermometer, chill promptly, and keep the original preparation date with the food.
Keep a small temperature reference handy
Use a food thermometer rather than relying only on color, steam, or melted cheese. Check the thickest part and avoid touching the pan or bone. FoodSafety.gov lists these minimum internal temperatures for the foods featured in our guides.
| Food | Minimum internal temperature |
|---|---|
| Salmon and other fish fillets | 145°F / 63°C |
| Ground beef or pork, including sausage | 160°F / 71°C |
| Chicken and turkey, including ground poultry and sausage | 165°F / 74°C |
| Casseroles and reheated leftovers | 165°F / 74°C |
Full FoodSafety.gov temperature chart. Follow product handling instructions as well.
Chill promptly and keep track of time
USDA advises refrigerating perishables within two hours, or one hour when the surroundings exceed 90°F. Divide large amounts into shallow containers for faster cooling. Keep refrigerated food at 40°F or below; use most cooked leftovers within three to four days or freeze them while still safe.
Do not wait for a deep pot to reach room temperature on the counter. Reheating cannot reliably rescue food that was handled unsafely. See USDA's leftovers guidance.
Label for the person opening the fridge tomorrow
A useful label answers three questions: what is it, when was it made, and what is the plan? “Chicken filling — Tuesday — enchiladas” is more helpful than an unmarked container. If several components were made on different days, keep those dates instead of hiding the oldest ingredient in a newly named dish.
Use containers sized for a realistic meal. A single enormous container encourages you to warm more than you need or lose track of what has been reheated. Keep sauces, crunchy toppings, and bread separate when doing so will improve the next meal.
Make the next meal a decision, not a guess
Before putting food away, choose whether it is tomorrow's lunch, another dinner, or a portion to freeze. Write that choice down or place the container where it is easy to find. If the plan changes, revisit the food's actual storage history rather than relying on its smell.
For road trips, use the cooler-packing guide. A sealed container protects against spills; it does not keep food at a safe temperature on its own.