Combine Ingredients: In the inner pot of the Instant Pot, combine the water, soy sauce, brown sugar, sesame oil, gochujang, apple, garlic, and ginger. Stir to blend. Layer the short ribs on top of the sauce mixture. You may need to cut them in half to fit.

Pressure Cook: Lock the lid in place and turn the steam valve to the sealing position. Choose the manual or pressure cook function (high pressure) and set the time for 20 minutes (for English style short ribs, 30 minutes). When the is up, carefully turn the valve to the venting position to release the steam. Use a long utensil to turn the valve; the steam is hot! Cancel the pressure cook function.

Finish the Dish: With a slotted spoon, remove the short ribs to a platter and cover with foil to keep warm. Skim off excess fat or put the liquids in a gravy separator to remove excess fat. Choose the Instant Pot sauté function and cook the liquids for about 7 to 10 minutes, or until the sauce is reduced and concentrated.

Serve and Enjoy: Pour the hot sauce mixture over the short ribs and garnish with sesame seeds and sliced scallions, and serve with rice or noodles.