Prepare the Riblets: Season the riblets with salt and pepper. Set aside.
Sauté Aromatics: Set the Instant Pot to "Sauté" mode. Throw in chopped garlic and grated ginger. Cook until it smells really good.
Brown the Riblets: Add the riblets and brown on all sides for about 3-4 minutes.
Make the Sauce: In a bowl, mix barbecue sauce, soy sauce, and brown sugar. Pour the sauce over the riblets.
Pressure Cook: Close the Instant Pot lid and set to "Manual" or "Pressure Cook" mode for 25 minutes.
Natural Release: Allow the Instant Pot to naturally release pressure for 10 minutes. Then, carefully do a quick release.
Finish Under Broil: Transfer riblets to a baking sheet, brush with additional sauce, and broil for 5 minutes for a caramelized finish.