A correct food safety practice is any habit that keeps food out of the temperature range where bacteria thrive, prevents cross-contamination, and reduces the chance of foodborne illness. The most fundamental practices include proper handwashing, cooking to verified internal temperatures, refrigerating perishable food promptly, and keeping raw meats separate from ready-to-eat items. Here’s a closer look at each one and the specific numbers that matter.
Keep Food Out of the Danger Zone
Bacteria grow most rapidly between 40°F and 140°F, a range food safety professionals call the “Danger Zone.” Within that window, bacterial populations can double in as little as 20 minutes. The practical rule: never leave perishable food at room temperature for more than two hours. If the ambient temperature is above 90°F (think summer picnics or hot kitchens), that window shrinks to one hour.
This applies to cooked food cooling on the counter, raw meat sitting out before cooking, and takeout containers you haven’t put away yet. If you’re unsure how long something has been out, discard it. You can’t see, smell, or taste the bacteria that cause food poisoning.
Cook to the Right Internal Temperature
Color and texture are unreliable indicators of doneness. A food thermometer is the only way to confirm that meat, poultry, or seafood has reached a safe internal temperature. The key numbers to remember:
- Poultry (chicken, turkey, duck): 165°F (74°C) for all cuts, including ground poultry and stuffing cooked inside the bird.
- Ground beef, pork, veal, or lamb: 160°F (71°C).
- Pork chops, steaks, and roasts: 145°F (63°C), then let the meat rest for 3 minutes before cutting or eating.
- Fish (salmon, tuna, cod, tilapia, etc.): 145°F (63°C), or cook until the flesh is opaque and flakes easily with a fork.
Insert the thermometer into the thickest part of the meat, away from bone, fat, or gristle. For thin items like burger patties, slide the probe in from the side so the tip reaches the center.
Thaw Food Safely
Thawing food on the counter is one of the most common mistakes in home kitchens. Even while the center of a frozen package stays solid, the outer layer warms into the Danger Zone, giving bacteria hours to multiply. There are three safe methods:
- In the refrigerator: The slowest method but the safest. Plan ahead, as a large roast can take a full day or more.
- In cold water: Submerge the sealed package in cold tap water, changing the water every 30 minutes. Cook immediately after thawing.
- In the microwave: Use the defrost setting and cook the food right away, since some areas may begin to warm during microwaving.
A fourth option: skip thawing entirely. Cooking food from a frozen state is safe. It will take roughly 50% longer than cooking thawed food, but it eliminates any Danger Zone exposure during the thaw.
Wash Your Hands the Right Way
Handwashing is the single most effective way to prevent the spread of foodborne germs, and there’s a specific technique that makes it work. Wet your hands under clean running water, apply soap, then scrub for at least 20 seconds. That means lathering the backs of your hands, between your fingers, and under your nails. Rinse under running water and dry with a clean towel or air dryer. A quick rinse without soap does almost nothing.
You should wash your hands before preparing any food, after handling raw meat or poultry, after touching your face or hair, after using the bathroom, and after handling garbage. Twenty seconds feels longer than you’d expect. Humming “Happy Birthday” twice from start to finish gets you to the right duration.
Clean First, Then Sanitize
Cleaning and sanitizing are two separate steps, not the same thing. Cleaning removes visible dirt and organic matter using soap or detergent. Sanitizing uses a chemical solution to kill bacteria on the surface after it’s been cleaned. Skipping the cleaning step means food residue can shield bacteria from the sanitizer.
For kitchen surfaces that contact food, wash with hot soapy water, rinse, then apply a sanitizing solution. When using any sanitizing product, follow the label directions carefully, paying attention to contact time. That’s how long the surface needs to stay wet with the solution for it to work. Wiping a sanitizer off immediately defeats the purpose.
Store Leftovers Promptly
Leftovers are safe in the refrigerator for 3 to 4 days when stored at 40°F or below. If you won’t eat them within that window, freeze them. Frozen leftovers maintain quality for 3 to 4 months, though they remain safe indefinitely at 0°F.
The goal when storing hot food is to cool it as quickly as possible. Divide large batches into shallow containers no deeper than about 3 inches so the food loses heat faster. Don’t wait for a pot of soup to reach room temperature before refrigerating it. Modern refrigerators can handle warm containers without significantly raising the internal temperature, and the faster food passes through the Danger Zone, the safer it is.
Wash Produce Under Running Water
Fresh fruits and vegetables should be rinsed under plain running water before eating, cutting, or cooking. Gently rub the surface while rinsing. The FDA specifically advises against using soap, detergent, or commercial produce washes. Soap isn’t designed for use on food and can leave residues. Running water is effective at removing dirt, bacteria on the surface, and pesticide residues.
Wash produce even if you plan to peel it. A knife passing through a contaminated rind can drag bacteria into the flesh. This is especially relevant for melons, avocados, and citrus.
Separate Raw and Ready-to-Eat Foods
Cross-contamination happens when juices from raw meat, poultry, or seafood come into contact with foods that won’t be cooked again. In the refrigerator, store raw proteins on the lowest shelf so drips can’t reach other items. Use separate cutting boards for raw meat and for foods like salad greens or bread. Never place cooked food on a plate that previously held raw meat without washing it first.
On the topic of cutting boards, research has challenged the widespread assumption that plastic boards are more sanitary than wooden ones. A study published in the Journal of Food Protection found that bacteria placed on wooden boards were absorbed into the wood grain within minutes and largely couldn’t be recovered afterward, while bacteria on plastic surfaces survived for hours and could multiply overnight. Heavily scarred boards of either material are harder to clean and should be replaced when knife grooves become difficult to scrub out.
Handle Eggs With Care
In the United States, commercially sold eggs are washed and sanitized before packaging, which removes the natural protective coating on the shell. That’s why they must be refrigerated from the moment they leave the processing plant. Once an egg has been refrigerated, leaving it at room temperature causes the shell to sweat, and that moisture can draw bacteria through the pores and into the egg. Any Salmonella present will also multiply faster at room temperature.
You should not wash eggs again at home. The wash water can actually be pulled into the egg through the shell’s tiny pores, increasing the risk of contamination rather than reducing it. Store eggs in their original carton on a refrigerator shelf, not in the door where temperatures fluctuate more.