As the internal temperature increases, the holding time for a 7-log 10 reduction decreases. Not widely known is the fact that chicken can achieve the same 7-log 10 reduction at temperatures as low as 136☏ (58☌) as long as that temperature is held at 136☏ (58☌) for at least 63.3 minutes. Salmonella isn’t anything to be trifled with, and 165☏ (74☌) is indeed the temperature to target if preparing food for individuals at higher risk of illness (older adults, pregnant women, young children, and others with compromised immune systems). This temperature is suggested because at 165☏ (74☌) the chicken achieves a 7-log 10 reduction-meaning that 99.99999% of the bacteria present are destroyed-instantaneously: a foolproof rule to follow for safety. The FDA Food Code suggests cooking chicken to 165☏ (74☌) to be sure all bacteria is killed and safe to eat. Food Safety is About Temperature and Time Proper cooking and refrigeration temperatures when dealing with chicken are critical to avoid foodborne illnesses. According to the CDC, 1 in 6 Americans gets sick from foodborne illness each year, and about one million of those cases can be attributed to salmonella. It lives in the temperature range of 35-117☏ (2-47☌) which is beyond what most other common food bacteria can tolerate. Why is there so much concern with this particular bacteria? Salmonella is a very hardy bacteria. Verifying the internal temperature of chicken is particularly important given the threat of salmonella bacteria in poultry. To learn the necessary thermal secrets, keep reading. In his book, Kenji López-Alt uses this principle along with the principle of carryover cooking in large masses of meat to achieve succulent, perfectly safe results at a dramatically lower pull temp. If you can hold your chicken at 145☏ (63☌) for 8.5 minutes, you can achieve the same bacterial reduction as at 165☏ (74☌). But the pasteurization of chicken is actually a function of both temperature and time. The FDA Food Code recommends cooking chicken to 165☏ (74☌).
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