- 3 lb (1.4 kg) St. Louis–cut spare ribs (about 2 racks) - 2 tbsp (30 ml) vegetable oil - 1/4 cup (50 g) brown sugar, packed - 1/4 cup (30 g) smoked paprika - 2 tbsp (30 g) kosher salt - 1 tbsp (15 g) black pepper, freshly ground - 1 tbsp (15 g) garlic powder - 1 tbsp (15 g) onion powder - 1 tsp (5 g) cayenne pepper - 1 tsp (5 g) ground cumin - 1 cup (240 ml) apple cider vinegar - Wood chips for smoking (hickory or apple) - 1 cup (240 ml) ketchup - 1/4 cup (60 ml) apple cider vinegar - 1/4 cup (85 g) molasses - 2 tbsp (30 g) brown sugar - 1 tbsp (15 ml) Worcestershire sauce - 1 tsp (5 ml) hot sauce
1. Remove the membrane from the bone side of the ribs and pat the ribs dry; rub vegetable oil over the racks. Mix brown sugar, smoked paprika, salt, pepper, garlic powder, onion powder, cayenne, and cumin; coat ribs evenly with the dry rub. Let rest refrigerated 1 hour or up to overnight. 2. Preheat smoker to 225°F (107°C) with hickory or apple wood chips. Place ribs bone-side down and smoke 3 hours, spritzing occasionally with apple cider vinegar. 3. After 3 hours, wrap ribs tightly in foil and return to smoker for 1.5 hours. 4. While ribs are wrapping, combine ketchup, apple cider vinegar, molasses, brown sugar, Worcestershire, and hot sauce in a saucepan; simmer 10 minutes to meld and thicken, then remove from heat. 5. Unwrap ribs and brush both sides with sauce; place back on smoker (or hot grill) for 30 minutes to set the glaze and develop bark. Rest 10 minutes, slice between bones, and serve.
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