Safe thawing
Thaw in the fridge, every time. Move tomorrow's pack from the freezer to the fridge the night before — typically 12 to 24 hours for a 1 lb pack. Cold, slow thawing keeps the meat in the safe zone below 40°F and preserves the natural moisture in the muscle tissue without cooking it at the edges.
Avoid room-temperature thawing on the counter: the outer layer climbs into the bacterial growth zone long before the center thaws through. Cold water thawing in a sealed bag is the only acceptable shortcut — submerge in a bowl of cold water and change the water every 30 minutes, expecting roughly an hour per pound.
Never use a microwave. Even on defrost, a microwave partially cooks the proteins and creates hot spots that destroy the nutritional integrity of an 80:10:10 grind. Microwaves also leave small patches warm enough to re-start bacterial growth by the time the rest of the pack finishes thawing.
Serve the pack at refrigerator temperature — roughly 38 to 40°F. Most dogs take cold raw happily, and serving cold eliminates the "should I wait for it to warm up?" guessing game that adds risk without any proven benefit.