Trim the brisket the night before your cook. Lay the cold brisket fat-side up on a large cutting board. Using a sharp boning knife, trim the hard fat cap down to approximately 1/4 inch thickness. Remove any silver skin and large hard fat deposits that will not render during the cook. Flip the brisket over and trim any thin sections of meat on the flat to prevent them from drying out. A well-trimmed brisket gives you even cooking and a more uniform bark. Aim to remove 1 to 2 pounds of hard fat and silver skin from a 14-pound packer.

Apply the rub generously. Coat the entire brisket with a thin, even layer of yellow mustard - this acts as a binder to hold the rub in place and does not affect the flavor once cooked. Mix your kosher salt, coarse black pepper, garlic powder, onion powder, smoked paprika, and cayenne in a bowl. Apply the rub aggressively on all sides of the brisket, pressing it into the meat with your hands. Do not be shy - this is a massive cut of beef and it needs a bold coating to develop that iconic bark. Wrap the seasoned brisket loosely in plastic wrap and refrigerate overnight or for a minimum of 4 hours.

Remove the brisket from the refrigerator 1 hour before cooking to allow it to come closer to room temperature. This helps promote more even cooking throughout the thick flat and point. While the brisket rests on the counter, fire up the grill or smoker to a target temperature of 225 to 250 degrees F. Set up for indirect heat and add your oak wood chunks to the fire or wood box. You want thin, blue smoke - not thick, billowing white smoke which can make the meat taste bitter. Allow the smoker to stabilize at 225 degrees F before loading the brisket.

Place the brisket fat-side up on the smoker grates over indirect heat with the point facing toward the heat source. Insert your leave-in probe thermometer into the thickest part of the flat, avoiding any fat seams. Close the lid and let the smoke and low heat do the work. Maintain a consistent temperature between 225 and 250 degrees F throughout the cook by managing your fuel and air vents. Avoid opening the smoker unnecessarily - every time you lift the lid you lose heat and precious smoke.

Monitor the cook and expect the stall. Around the 5 to 7 hour mark when the internal temp reaches approximately 150 to 165 degrees F, the brisket will hit the stall. This is a completely normal phenomenon where evaporative cooling stops the internal temp from rising for several hours. Do not panic and do not crank up the heat. This is where patience separates good BBQ from great BBQ. You can power through the stall by waiting it out, or you can wrap at this point to push through more efficiently.

Wrap the brisket in pink butcher paper when the internal temp hits 165 degrees F and you have developed a deep mahogany bark that holds firm when you press it with your finger. Pull the brisket from the smoker, place it in the center of a large sheet of pink butcher paper, and wrap it tightly like a burrito - folding the sides in first and then rolling. Return the wrapped brisket to the smoker with the seam side down. Insert your probe back through the paper and continue cooking.

Continue cooking the wrapped brisket at 225 to 250 degrees F until the internal temp reaches 200 to 205 degrees F. At this point, begin checking for probe tenderness by inserting your thermometer or a thin skewer into the thickest part of the flat - it should slide in with zero resistance, like going into warm butter. The point will always probe softer than the flat, so the flat is your guide. Most full packer briskets reach this stage after 12 to 16 hours total, but cook to feel and not just to time.

Rest the meat properly - this step is non-negotiable. Once the brisket probes tender and reaches 203 degrees F, pull it from the smoker and let it rest. For a brisket this size, rest the meat still wrapped in butcher paper for a minimum of 1 hour, and ideally 2 to 4 hours. For an extended rest, place the wrapped brisket in an empty cooler with no ice - this is called a faux cambro. Layer towels around it to retain heat. The rest allows the juices to redistribute throughout the meat and the internal temp to equalize from the point to the flat.

Slice the brisket correctly and serve immediately. Unwrap the rested brisket on a large cutting board and save any accumulated juices in the butcher paper - those are liquid gold. Separate the flat from the point by cutting along the fat seam that divides them. Slice the flat against the grain into pencil-thick slices, approximately 1/4 inch. The point can be cubed into burnt ends or sliced against its own grain at an angle. Lay the slices out on a serving platter, drizzle with the reserved juices, and serve immediately with your favorite BBQ sides.