Pressure Cook Chicken Wings: Pour 1 cup (250ml) cold water in Instant Pot Pressure Cooker.
Place a steamer basket in Instant Pot, then add chicken wings and drumettes in the steamer basket.
Close lid and pressure cook at High Pressure for 5 minutes + Full Natural Release. Open the lid carefully.
Preheat Airfryer: While Instant Pot is naturally releasing, dial airfryer to 400°F and set the timer to 10 minutes.
If Using Oven: While Instant Pot is naturally releasing, preheat oven to 450°F.
Pat Dry Chicken Wings: Remove wings and drumettes from Instant Pot. Pat them really dry with paper towels.
Apply Sauce and Place in Airfryer: In a large mixing bowl, toss wings and drumettes with ½ cup (125ml) BBQ sauce. Add chicken wings and drumettes in the airfryer basket. Airfry until sauce is glossy and caramelized (~5–10 mins).
After 2 - 3 minutes, take out the airfryer basket, then give it a toss to make sure the chicken wings brown evenly.
If Using Oven: Place chicken wings and drumettes in a single layer on a wire rack in a baking tray. Bake until the sauce is glossy and caramelize (~8–15 mins).