If you want to reheat your smoked brisket in your smoker or on the grill, the process will be very similar to reheating the brisket in the oven. However, reheating brisket on your grill is significantly different.
Allow your meat to sit outside of the fridge for 20-30 minutes so that it comes to room temperature. Once the brisket is at room temperature, wrap it in heavy.
If you use your grill, heat your grill to 225 degrees Fahrenheit. The key to reheating brisket on the grill is using the two-zone cooking set up so that you don’t put too much heat onto your brisket.
Then, unwrap the foil and move the brisket to the direct heat zone for no more than five or 10 minutes. When the internal temperature is 160 degrees Fahrenheit, it is ready to serve.