In a bowl, which together all the ingredients for the marinade then pour over the ribs. Cover and place in the fridge for 8 or more hours.
Once marinated, pour 1 cup of water (you can also use beef broth) in the basin of the instant pot then place the rack on top (that comes with the instant pot) and place the spare ribs inside the pot, stacking the ribs as needed.
Secure the lid, close off the pressure valve, turn on and press manual to high pressure and press the up button until the time hits 30 minutes then quick release the valve.
Turn oven to broil. Place a rack on top of a baking sheet then use tongs to place each rib on the rack. Sprinkle salt on each rib. Mix together the ingredients for the sticky topping and use a basting brush to brush the topping onto each rib. Place in the oven to broil for 3-4 minutes, until golden.
Top with sesame seeds, peppers, and green onions before serving!