1/4 cup water
1/4 cup ketchup
1 tablespoon Dijon mustard
1 tablespoon molasses
1-1/2 teaspoons packed brown sugar
1 teaspoon Worcestershire sauce
1/4 teaspoon kosher salt
1/4 teaspoon chipotle hot pepper sauce
1/8 teaspoon pepper
1-1/4 teaspoons mustard seed
1-1/4 teaspoons smoked paprika
1-1/4 teaspoons whole peppercorns
1 teaspoon onion powder
1 teaspoon garlic powder
1/2 teaspoon kosher salt
1/4 teaspoon cayenne pepper
1-1/2 teaspoons brown sugar
4 bone-in pork loin chops (7 ounces each)
In a small saucepan, mix first nine ingredients; bring to a boil over medium heat. Reduce heat; simmer, uncovered, until slightly thickened, about 10 minutes, stirring occasionally. Reserve 1/4 cup sauce for serving.
Using a mortar and pestle or spice grinder, crush seasonings with brown sugar. Rub mixture over chops.
Place chops on an oiled grill over medium heat. Grill, covered, until a thermometer reads 145°, 5-6 minutes per side, brushing top with remaining sauce after turning. Let stand 5 minutes before serving.
Serve with reserved sauce.