2 full slabs of pork ribs, about 3 pounds each
1 tablespoon cayenne pepper
2 tablespoons salt
4 tablespoons sugar
2 tablespoons ground cumin
2 tablespoons freshly ground black pepper
2 tablespoons chili powder
4 tablespoons paprika
Mix all spices together. Preheat oven to 250 degrees F (120 C). Rub pork ribs on both sides liberally with mixture. Place ribs on a baking sheet, meaty side up, lay a piece of parchment paper on top of ribs to protect from the foil, cover and seal tightly with aluminum foil. Bake 4-5 hours or until fork tender.
In the meantime prepare Barbecue Sauce.
Mix together in a medium size pot:
2 cups sugar
1 tablespoon salt
1 Tablespoon chili flakes or more to taste
1 ½ teaspoons freshly ground black pepper
1 cup yellow prepared mustard
1 ¼ cups ketchup
½ cup water
12 ounces white vinegar
Cook over medium heat for 30 minutes, stirring occasionally.
Mix together in a small bowl:
¼ cup sugar
¼ cup corn starch
¼ cup cold water
Stir into sauce and simmer for another 30 minutes.
When ribs are tender, remove the foil and drain off the excess fat. Liberally slather the ribs on the meaty side with the barbecue sauce and heat through.