01 - Pat the brisket thoroughly dry with paper towels to ensure proper seasoning adherence. Rub the entire surface with olive oil, coating evenly.
02 - Combine smoked paprika, cumin, garlic powder, onion powder, oregano, salt, black pepper, and chili powder in a small bowl. Mix thoroughly to distribute all spices evenly.
03 - Massage the dry rub mixture generously over all surfaces of the brisket, pressing gently to help the spices adhere. Ensure complete coverage for maximum flavor penetration.
04 - Place the seasoned brisket in the slow cooker with the fat side facing up. This allows the rendered fat to baste the meat during cooking, keeping it moist and flavorful.
05 - Whisk together ketchup, apple cider vinegar, brown sugar, Worcestershire sauce, Dijon mustard, smoked paprika, garlic powder, onion powder, and liquid smoke in a medium bowl until completely smooth and well incorporated.
06 - Pour half of the prepared BBQ sauce over the brisket, ensuring the meat is evenly coated. Reserve the remaining sauce for serving later.
07 - Cover the slow cooker with the lid. Cook on low heat setting for 8 hours. The brisket is done when it's fork-tender and easily shreds with minimal pressure.
08 - Carefully remove the brisket from the slow cooker and transfer to a cutting board. Let rest for 10 minutes to allow juices to redistribute throughout the meat.
09 - Skim any excess fat from the cooking liquid remaining in the slow cooker. Combine the defatted cooking liquid with the reserved BBQ sauce and mix well.
10 - Slice the brisket against the grain into thin strips or shred using two forks. Serve immediately with the enhanced BBQ sauce on the side for guests to add as desired.