In a medium sauce pan, add all ingredients for sauce and stir. Let simmer over
medium-low heat for 20-30 minutes until reduced and thickened.
Prepare a baking sheet with foil and preheat grill.
Generously season pork tenderloin with salt and pepper.
Place on grill over medium heat; sear for 1-2 minutes on each side.
Place prepared baking sheet on one side of grill and move seared meat to baking sheet.Reduce heat to medium-low.
Remove a cup of sauce from the pan; reserve the rest for serving. Baste with sauce, close grill and let cook for 3-4 minutes. Rotate and baste with additional sauce.
Continue to rotate and baste until pork is fully cooked (145).
Remove from grill and let set for 3-5 minutes.
Shred or slice pork. Serve on Dempster’s Buns with additional sauce.