Is 1 day old hamburger in refrigerator safe to fry and eat?

No, it is not safe to fry and eat a 1 day old hamburger that has been in the refrigerator. The USDA recommends consuming ground beef within one to two days of purchase, and cooked ground beef within three to four days. After this time, the risk of bacterial growth increases, which can lead to foodborne illness. Additionally, frying the hamburger does not kill all bacteria, so it is still unsafe to eat.