Dry brine the brisket with an even coating of kosher salt
Place the brisket on uncovered tray in the fridge for 24 to 48 hours
Remove the brisket and season liberally with pepper and granulated garlic
Set smoker to 250 degrees
Fill the smoke tube with pellets and ignite until flaming, for 10 minutes. (optional)
Blow out flame and transfer the smoke tube to the pellet grill. (optional)
Place the brisket fat side down with the thickest part (the point) towards the heat source
Smoke at 250 degrees
After 3 to 4 hours start spritzing with 50% apple cider vinegar and 50% water solution
Continue spraying every hour until internal temp measures 170°
Pull off brisket at 170° and wrap tightly with butcher paper or foil
Return brisket to the smoker and continue to smoke at 250 degrees
Remove the brisket when the internal temperature measures 203 degrees (or is probe tender*)
Allow the brisket to cool for at least 1 hour before slicing
Notes
*probe tender means that when a temperature probe is inserted into the brisket, it goes in and out smoothly. Like a knife through room temperature butter