Step 1: Prepare the Brisket - Preheat your smoker or oven to 225°F (107°C). Pat the brisket dry with paper towels.
Step 2: Make the Spice Rub - In a mixing bowl, combine the salt, black peppercorns, onion salt, chili powder, turmeric, and brown sugar. Mix well.
Step 3: Season the Brisket - Rub the spice mixture all over the brisket. Let sit for about 30 minutes.
Step 4: Smoking the Brisket - Cook the brisket in the smoker for about 1.5 to 2 hours per pound until it reaches 195°F (90°C).
Step 5: Resting the Meat - Let the brisket rest for at least 30 minutes, wrapped in foil.
Step 6: Slice and Serve - Slice the brisket against the grain and serve on hamburger buns with BBQ sauce.