PSA: You Can Only Safely Freeze Thawed Meat If Thawed in the Refrigerator
Raise your hand if this has happened to you before: you took meat out of the freezer to defrost, only to never have time to cook it. You can still save the meat and freeze it again, but only under one condition.
As The Kitchn points out, following the USDA’s safe defrosting guidelines, you can re-freeze meat without cooking if it has been thawed in the refrigerator. In the refrigerator, meat thaws at a safe, constant low temperature. On the other hand, in a microwave oven or using cold water methods, meat can thaw unevenly, and some parts can reach a higher, unsafe temperature, which can contribute to the growth of bacteria. Hey, the more you know.