Pre-heat your smoker according to its manufacturer's instructions to 225°F (107°C) to 250°F (121°C).
Add brown sugar, paprika, salt, black pepper, garlic powder, onion powder, and cayenne pepper (if using) to a small bowl. You will use this mixture as a dry rub.
Leave a thin layer of fat on the short ribs to add flavor and moisture. Dry the ribs with paper towels.
Make sure all sides of the ribs are coated with the dry rub. For best results, massage the rub into the meat gently.
Let the seasoned ribs sit in the refrigerator for at least one hour or overnight if you have time. Meat absorbs flavors during this step.
In the meantime, soak the wood chips in water for about 30 minutes. Drain them before using.
If you're using a charcoal smoker, place the soaked wood chips directly on the coals. As a result, the flavor will be smoky.
When the smoker reaches the desired temperature, place the short ribs bone side down on the grates and close the lid.
Cook at a consistent temperature throughout.
Smoke the short ribs for approximately 4 to 6 hours, or until they reach a temperature of 195°F (90°C) to 203°F (95°C).
It should be easy to pull apart and tender.
When the ribs are cooked perfectly, remove them from the smoker and let them rest for about 10 minutes. It allows the juices to redistribute.
During the last 15-30 minutes of cooking, brush the ribs with barbecue sauce for a sticky glaze.
The cooked short ribs can be served as a main course with barbecue sauce on the side, if desired.
Enjoy! Flavorful Smoked Beef Short Ribs