Eli5 How come “aging” food doesn’t make it spoil?

Question

Things like “dry aged” steak.

In: 69

Answer 1

Food spoiling is because of “bad” bacteria/fungi that multiply. Dry aging steaks is done by covering the meat and, like the name implies, keeping it in a dry environment, since molds and bacteria thrive in moist environments, the ones that cause spoiling of food dont get a chance to multiply.