In a small bowl, combine the salt, paprika, onion powder, garlic powder, ground ginger, and black pepper.
Remove the silver skin from the back of two racks of pork back ribs and cut the ribs into 3-4 rib sections. Season the ribs front and back with the seasoning mix.
Place a trivet in the inner cooking pot of an electric pressure cooker and add 1 cup water. Add the ribs.
Close and lock the lid, making sure the steam knob is on Sealing/Locked. Pressure cook on high for 18 minutes. If you prefer the ribs less fall-off-the-bone and with a little tug on them, cook them for only 15 minutes. If you want them to completely fall-off-the-bone, cook for 20 minutes.
Meanwhile, in a small bowl, whisk together hoisin sauce, oyster sauce, honey, rice vinegar, soy sauce, crushed red pepper flakes and brown sugar. Set aside.
Once the pressure cooking is done, quick release the pressure.
Preheat the broiler. Line a sheet pan with aluminum foil. Lay the ribs, bone side up and brush lightly with the sauce. Broil for 3-5 minutes until the ribs are slightly browned and caramelized.
Flip the ribs over, meat side up and brush liberally with remaining sauce. Broil for 5-7 minutes until ribs are browned and caramelized.
Alternatively, grill the ribs on the barbecue and baste with the sauce until browned and caramelized.
Serve on a platter with sauce drizzled on top. Sprinkle with sesame seeds and cilantro.