Preheat oven to 375 F. Prepare Instant Pot vessel with 1 cup water. Add the trivet. Grease a large baking sheet.

Add chicken wings to the trivet inside Instant Pot. Close and lock the lid. Set Pressure to HIGH, Time to 8 minutes. 

Meanwhile, make the sauce. In a small saucepan, add the aminos, ginger powder, garlic powder and pepper flakes. Heat over medium high and cook, whisking 5-7 minutes until sauce thickens. 

When the time is up on the Instant Pot, release the pressure. Place cooked wings on the greased cookie sheet in a single layer. 

Using a grill brush or pastry brush, brush the wings with prepared sauce to coat.

Transfer to the oven and bake 15-20 minutes, basting again halfway through.

Remove wings from oven, sprinkle with sesame seeds and green onions and serve.