Begin by turning the Instant Pot on to the Sauté setting and adding the sesame oil. Allow it to heat up slightly before moving on to the next step.
Next, add several of the chicken thighs, skin-side down, to the pot. Brown the skin for about 2 to 3 minutes until it turns a golden brown color. This step is crucial for developing a rich flavor.
Once the skin has browned, carefully remove the thighs from the pot and set them aside. Repeat with the remaining chicken, making sure each piece gets that lovely golden finish.
After browning, place all the browned chicken thighs back in the Instant Pot, skin-side up. This arrangement helps the skin stay moist while it cooks under pressure.
In a separate bowl, pour in the soy sauce, brown sugar, ketchup, garlic, and ginger. Whisk these ingredients together until they form a smooth glaze.
Pour the prepared glaze over the chicken thighs in the pot, ensuring they’re well coated. Lock the lid into place to secure everything inside.
Set the Instant Pot to Pressure Cook High for 20 minutes. Once the cooking cycle is complete, turn the pot off and perform a Quick Release to release the steam. Be cautious as the steam escapes, and wait for the pressure valve button to drop.
Once it’s safe to open the lid, carefully scoop out 1/4 cup of the cooking glaze from the pot into a small bowl.
Whisk in 1 tablespoon of cornstarch into the reserved glaze to create a thickening slurry.
Turn the Instant Pot back on to the Sauté setting and stir the cornstarch slurry back into the pot. Allow it to simmer for 2 to 4 minutes, watching as the glaze thickens beautifully.
Finally, turn off the pot and sprinkle the thighs with sesame seeds and chopped scallions before serving. This adds a lovely crunch and visual appeal to your dish.