At Post & Beam, located in Los Angeles, pork ribs get an interesting twist with the inclusion of a white barbecue sauce based on mayonnaise, white vinegar, and eggs instead of the usual tomato-based sauce.
Combine the fennel seeds, coriander seeds, oregano, salt, garlic powder, onion powder, paprika, and yogurt in a large bowl and rub into the baby back ribs. Marinate in the refrigerator for at least 2 days.
When ready to cook, preheat the oven to 250 degrees.
Bake in the oven for 1 ½ hours. Remove from the oven and let cool to room temperature.
Preheat a gas grill or grill pan over medium heat, or prepare a charcoal grill.
Combine all of the ingredients in a large bowl and mix thoroughly. Warm the ribs on the grill, toss the ribs in the white barbecue sauce, and return to a warm spot on the grill. Continue to baste and slather with sauce until nicely caramelized, about 10 minutes. Serve warm.