Gently simmer all of the ingredients in a saucepan over medium heat, until salt has dissolved and the BBQ mop is warmed through. Cover, and let the mixture stand for 5 minutes before using.
Transfer mixture to a food-safe spray bottle, or keep in the saucepan if using a mop brush
After your smoked meats have had time to build a sufficient bark (generally after 2 hours of cooking time), Apply or spritz a thin layer of the mixture onto the meat every 2 hours until you wrap the meat.
Make the mop the day before, store it in an airtight container in the refrigerator, and rewarm on your stovetop or microwave until warmed through. Use as directed above.