Preheat the oven or smoker to 225 degrees F.
Trim the fat evenly across the top to 1/4-inch thick. Season the brisket liberally with the seasoning rub. Cook in the oven or smoker until the internal temperature on an instant- read meat thermometer reaches 175 degrees F, about 6 to 8 hours. Remove the meat from the oven or smoker and wrap in a double layer of aluminum foil to seal in the juices. Turn the foiled meat upside down and place it back in the oven or smoker for 1 more hour. Remove and let the meat rest for 20 minutes. Slice in 1/4-inch thick slices.
Professional Recipe: This recipe was provided by a chef, restaurant or culinary professional and makes a large quantity. The Food Network Kitchens chefs have not tested this recipe in the proportions indicated and therefore cannot make any representation as to the results.
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