Marinate spare ribs (see above) in a bowl for 30 minutes. Then add 2 tbsp of oil. Then add 1 tbsp of cornstarch and mix well. Finally, add 1-2 tsp of water and mix well.
Add 1 cup of water to the pressure cooker. Place steam rack into IP. Put the bowl of spare ribs on the rack. Pressure cook on high for 20 minutes. Then, natural release.
Garnish with green onions if you wish, then serve.