1
In a small bowl whisk together vinegar, soy sauce, honey, brown sugar, sesame oil, pepper, and garlic. Set aside. Turn Instant Pot to sauté. Add oil, bell peppers and onions. Sauté. Transfer vegetables to a plate.
2
Sprinkle steak with salt. Add oil into Instant Pot. Brown for 2 minutes on each side. Move meat to the side. Pour in the soy sauce mixture. Turn off sauté. Pressure cook 45 minutes. Let sit about 15 minutes.
3
Move steak to a cutting board and slice or shred. Make cornstarch slurry. Turn Instant Pot to sauté setting. Stir the cornstarch slurry into the pot to thicken the sauce.
4