Yes, cooking kills Salmonella. Heat destroys the bacteria by breaking apart their proteins and damaging their cell membranes, and reaching the right internal temperature for the right amount of time eliminates the risk in virtually any food. The key is that the entire portion of food needs to hit that temperature, not just the outside.
Safe Temperatures by Food Type
Different foods require different internal temperatures because of how bacteria distribute within them. For poultry (chicken, turkey, duck, including ground poultry), the target is 165°F (73.9°C). This applies to all cuts: breasts, thighs, wings, whole birds, and any stuffing cooked inside them.
Ground beef, pork, veal, and lamb need to reach 160°F (71°C). The reason ground meat requires a higher temperature than whole cuts of the same animal is that grinding mixes surface bacteria throughout the meat. A whole steak only has bacteria on the outside, which searing takes care of. A burger has potential contamination all the way through.
Whole cuts of beef, pork, and lamb are considered safe at 145°F (63°C) when followed by a three-minute rest. During that rest, the internal temperature holds steady or rises slightly, continuing to kill bacteria even after you remove the meat from heat.
Eggs are a common source of Salmonella, and they require special attention. A fully cooked egg with a firm yolk and firm white has reached a safe temperature. Runny yolks and soft-scrambled eggs carry some risk because the center may not have gotten hot enough. Commercial pasteurized eggs, which have been held at around 130 to 140°F for several minutes, are a safer option if you prefer your eggs less cooked.
Why Temperature and Time Both Matter
Killing Salmonella isn’t just about hitting a magic number on the thermometer. It’s about temperature combined with time. At 165°F, Salmonella is destroyed almost instantly, which is why that number is used as a simple guideline for poultry. But lower temperatures can also kill the bacteria if the food stays at that temperature long enough. For example, chicken held at 150°F for several minutes achieves the same level of safety as chicken that briefly hits 165°F.
This is why the USDA recommends a three-minute rest for whole cuts of beef and pork cooked to 145°F. The sustained heat during resting finishes the job. An instant-read thermometer is the only reliable way to verify this. Color is not a trustworthy indicator. Chicken can look pink and be fully cooked, or look white and still be undercooked in spots.
Low-Moisture and High-Fat Foods Are Trickier
Salmonella becomes significantly harder to kill in dry or low-moisture environments. When water activity drops (think peanut butter, powdered milk, chocolate, dried spices, or protein powder), the bacteria enter a stress response that makes them far more heat-resistant. This is one reason Salmonella outbreaks have been traced to foods people don’t typically associate with the bacteria, like cereal, nut butters, and dried seasonings.
In practical terms, this means you can’t assume that toasting or briefly heating a dry food will eliminate contamination. The bacteria survive temperatures in low-moisture foods that would easily kill them in a moist environment like raw chicken. Industrial processors use specialized high-heat treatments for these products, but at home, the safest approach is to buy from reputable sources and check for recalls on dry goods.
Microwave Cooking Needs Extra Care
Microwaves kill Salmonella just as effectively as conventional ovens, but they heat food unevenly. Cold spots, areas that never reach a safe temperature, are the main risk. The USDA recommends stirring, rotating, or flipping food midway through microwaving to distribute heat more evenly. Covering the dish traps steam, which helps create moist heat that penetrates more uniformly.
Stuffed items are particularly risky in a microwave. The outer layers cook quickly, but the dense center (especially stuffing inside poultry) may not reach a safe temperature before the outside appears done. If you’re microwaving something thick or stuffed, check the internal temperature in the thickest part and in the center of the stuffing separately.
Cooking Doesn’t Help If Food Gets Recontaminated
One of the most common mistakes isn’t undercooking. It’s reintroducing Salmonella to food that was already safely cooked. This happens when cooked food touches a surface, utensil, or cutting board that previously held raw meat, poultry, or eggs. Placing grilled chicken back on the same plate that held it raw is a classic example.
Salmonella can survive on countertops, cutting boards, knife handles, and sponges. Washing these surfaces with hot, soapy water after contact with raw animal products prevents cross-contamination. Use separate cutting boards for raw meat and for foods that won’t be cooked, like salads and bread. And skip rinsing raw poultry in the sink. It doesn’t remove bacteria but does splash contaminated water onto surrounding surfaces.
What Cooking Cannot Fix
While heat destroys Salmonella bacteria, it does not eliminate all risks from contaminated food. Some bacteria (not Salmonella, but others like certain strains of Staphylococcus) produce toxins that are heat-stable, meaning cooking kills the bacteria but leaves behind toxins that can still cause illness. This is why food that’s been left at room temperature for hours and then reheated isn’t necessarily safe, even if it reaches the right internal temperature. Keeping raw food refrigerated until you’re ready to cook it, and refrigerating leftovers within two hours, prevents bacteria from multiplying and producing toxins in the first place.