Pressure Cook Short Ribs: Add 1 tbsp (15ml) light soy sauce, 1 tbsp (15ml) fish sauce, 1-1.5 tbsp (14-21g) brown sugar, 2 tbsp (30ml) balsamic vinegar, and ½ cup (125ml) unsalted chicken stock in Instant Pot. Carefully add in browned short ribs + meat juice.
If you are making mashed potatoes: Cut 3 - 4 potatoes in half, then place them in a stainless steel bowl. Layer the bowl on top of the short ribs.
Then, pressure cook:
-With Potatoes: High Pressure 42 minutes + Natural Release 15 minutes
-No Potatoes: High Pressure 45 minutes + Natural Release 15 minutes