In a medium mixing bowl, stir together sauce, honey, vinegar and brown sugar; set aside. Cut racks between the ribs into 3-4 evenly sized pieces; sprinkle evenly with rub on both sides. Place ribs in a pressure cooker; pour in sauce and cook on high for 30 min. Use a natural pressure release for 30 min.; manually vent remaining pressure. Remove ribs from the cooker and place them, meaty side up, on a foil-lined sheet pan. Brush some sauce from the cooker on top of the ribs; broil in the oven under a preheated broiler until the edges start to look crisp (about 2 min.). Tent ribs with foil and set aside. While ribs rest, turn on the sauté function of the pressure cooker; bring remaining sauce to a boil. In a small bowl, combine cornstarch and water; whisk into hot sauce to thicken. Cut ribs into individual rib pieces and place on a platter; drizzle with sauce and serve remainder on the side for dipping. Garnish ribs with seeds and onion.
- You can also cook these ribs in the slow cooker for 8 hrs. on low. Broil as directed. Pour the remaining sauce from the slow cooker into a saucepan and thicken on the stovetop over medium-high heat as directed above.
- Other Kalbi Sauce flavors (Original or Sticky Sweet) may be used instead of Kickin' Kalbi.