how does cheese and yogurt not give us food poisoning?
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Not all bacteria are harmful. Some of them are pretty beneficial to us. Over the course of countless generations, we’ve learned plenty of ways to use those good strains of bacteria to preserve food.
As long as the food we’re trying to preserve is kept in a clean environment, we can control which kinds of bacteria get into it. Once a good strain of bacteria has had a chance to get established, it’s harder for the harmful strains to get into the food.
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