To make sauce: Add the sauce ingredients in a small saucepan. Heat over medium heat until mixture boils. Reduce heat and simmer for 5 minutes. Set aside.
Preheat oven to 375F/190C. Line a large baking sheet with parchment or foil.
Place ribs on prepared pan and sprinkle with salt and pepper. Roast for about 90 minutes, or until internal temperature is 170F/80C. You may brush the ribs with some sauce in the last 10 minutes of cooking.
Cut ribs into individual portions and brush liberally with the sauce. Sprinkle with sesame seed if using.