Ingredients

1/2 cup ketchup

1/2 cup packed light-brown sugar

1/2 cup cider vinegar

1 tablespoon mustard powder

1/2 teaspoon cayenne pepper

Coarse salt and ground pepper

4 pounds country-style pork ribs, separated into single ribs

Barbecue sauce, for serving (optional)

Preparation

In slow cooker, whisk together ketchup, sugar, vinegar, mustard powder, cayenne, 1 teaspoon salt, and 1/2 teaspoon pepper.

Add ribs to slow cooker, and toss with sauce. Arrange ribs, bone side up, in a single row. Cover; cook on high, 6 hours (or on low, 10 hours).

Serve ribs drizzled with pan juices and, if desired, barbecue sauce.