The best time to baste brisket is after the first hour, and then every hour until wrapping. Once the brisket is wrapped in foil, the steam will help keep the meat moist. You won't need to mop the brisket in the first hour because the meat will be moist.
How often should you mop your brisket?
Best Odds Brisket Mop
The mixture of oil, vinegar, and beer will keep the meat tender and flavorful while it smokes. Remember to apply the mop every 2 hours.
Do you need to mop brisket?
A good mop recipe will give your barbecue the flavor it needs! ... Mop brisket every hour until done. Keep mop mixture heating on low throughout the process, so it's not cold when you apply.