The heat source for the Ninja Woodfire Grill is electric, it's not the burning pellets. Therefore, the smoke is not going to produce the same level of gases that produce the smoke ring reaction that a charcoal grill or pellet grill would produce. Smoke rings are pretty in pictures, but a brisket without a smoke ring can still taste awesome. If you want to read about of the science of smoke rings, visit AmazingRibs.com.