When does hamburger spoil?

* Raw ground beef: 1-2 days

* Cooked hamburger patties: 3-4 days

Frozen (0 °F or below)

* Raw ground beef: up to 4 months

* Cooked hamburger patties: up to 4 months

It's important to note that these are just general guidelines. The shelf life of hamburger can vary depending on the quality of the meat, how it's been handled, and the storage conditions.

Here are some tips to help keep hamburger fresh and safe to eat:

* Buy hamburger from a reputable source.

* Look for meat that is bright red in color and has no off odors.

* If you're not going to cook the hamburger right away, freeze it as soon as possible.

* Thaw frozen hamburger in the refrigerator or under cold running water.

* Cook hamburger to an internal temperature of 160 °F.

* Refrigerate or freeze any leftover hamburger within 2 hours of cooking.

By following these tips, you can help to ensure that your hamburger is fresh and safe to eat.