Preheat your grill to medium-high heat for indirect heat.
Place the tenderloin(s) on the grill over the indirect heat, and cook for 35 minutes, turning them over halfway through.
4 to 5 lbs. pork tenderloin
While the meat is cooking, combine all the other ingredients in a blender and pulse until everything is smooth.
1 cup fresh blackberries, ¼ cup homemade ketchup, ¼ cup honey, 1 tbsp. fresh ginger, 1 clove garlic, ½ tbsp. chili powder, 1 tsp. paprika, Sea salt and freshly ground black pepper
Place the sauce in a saucepan over medium heat and bring to a simmer, stirring frequently, and let it simmer for about 10 minutes.
Baste the tenderloin with the sauce. Turn and cook for about 10 minutes then repeat the process for the other side.
Serve with the extra BBQ sauce.