Trim any excess fat away from the brisket and save to make tallow.
Combine salt and pepper to make the rub.
Liberally apply the rub on all sides of the brisket.
Allow to set at room temperature for at least 1 hour.
Combine the beef broth and fat together in a bowl.
Using the meat injector filled with the broth blend, inject the mixture all over the brisket. Do this outside or in a large sink, as it can get messy if you inject too much liquid.
Smoking the Brisket
Set your smoker to 225F and let it heat up for about 15 minutes.
Place the brisket, fat side down, onto the grill grates.
Insert your thermometer (only if it's heat resistant) into the thickest part of the meat, aiming for muscle, not fat.
Smoke until the internal temperature reaches 165F.
Wrap the brisket in foil or butcher paper and return it to the smoker.
Smoke until the temperature reaches 200-205F.
Once cooked, remove the brisket from the smoker and place it into a large cooler, and close the lid.
Allow it to rest for at least 1 hour. I rested this one for 4 hours, and it was perfect!