A simple salt and pepper-based spice rub is the key to making these spare ribs delicious. Just brush on a mixture of Dijon mustard and white vinegar, sprinkle with our spices, and let them rest for 4 to 12 hours to soak up the goodness. Then it's as easy as popping them into a preheated oven for about 3 1/2 hours until they're fork-tender. This couldn't be easier! Get Chef John's recipe for Salt and Pepper Spare Ribs.