Why does ground beef have to be cooked at 155?

Online Answer
For example, cooking raw, ground meat to at least 155 degrees Fahrenheit for 15 seconds can kill bacteria, such as E. coli, that is potentially in the meat. ... That is why it is critical to properly cook foods to reduce harmful bacteria to levels that will not make individuals sick.
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Our recommendation: With breaded and battered foods, reuse oil three or four times. With cleaner-frying items such as potato chips, it's fine to reuse oil at least eight times—and likely far longer, especially if you're replenishing it with some fresh oil.
Another way to use apple cider vinegar when cooking is to make a marinade. In fact, apple cider vinegar is a popular ingredient in many steak marinades, as it gives the meat a nice sweet and sour flavor. Combine it with wine, garlic, soy sauce, onion and cayenne pepper to give your steak a delicious flavor.
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