Maple Chipotle BBQ Sauce

Why I Love This Recipe
The yield here is a crowd suitable size 1/2 gallon. To make a more family cooking friendly size yield, use the ingredient amounts in the parentheses, which comes to 1 pint of sauce.
Ingredients You'll Need
6 cups (1½ Cups) Vermont maple syrup
4 oz (2 tbsp) chipotle peppers in adobo sauce
2 cups (½ cup) apple cider vinegar
1½ cups (⅓ cup) brown sugar
2 tbsp (1½ tsp) Worcestershire sauce
4 tbsp (1 tbsp) dry rub mix
8 cups (2 cup) ketchup
---Dry Rub---
4 tbsp (1 tbsp) brown sugar
2 tbsp (1½ tsp) kosher salt
2 tbsp (1½ tsp) chili powder
1 tbsp (¾ tsp) black pepper
1 tbsp (¾ tsp) onion powder
1 tbsp (¾ tsp) garlic powder
1 tbsp (¾ tsp) red pepper flakes
Directions
Combine maple syrup and chipotle peppers in a thick-bottomed stainless steel pot. Cook on medium-low heat for 20 minutes or until syrup has reduced by half.
Add apple cider vinegar, brown sugar, Worcestershire sauce, dry rub, and ketchup and let simmer for 30 minutes. Remove from heat and purée with hand held stick blender. Serve with chicken or pork.