Combine the soy sauce, mirin, honey, sake, water, ginger, and garlic into the Instant Pot insert. Then, place the chicken thighs inside and ensure they’re all coated.
Place the lid and ensure the knob is set to seal. Set the Instant Pot to Pressure (or Manual) on Normal High for 10 minutes. After the Instant Pot beeps, allow 5 minutes for a natural pressure release.
Set aside the chicken thighs onto a baking pan. Pour a little more sauce on top of each of the chicken thighs. Then, broil for about 1 minute. Make sure to keep watch to make sure the chicken doesn’t burn!
Lastly, create a slurry using room temperature water and potato starch. This will thicken the sauce when we go pour it over after the chicken thighs are done broiling. Add to your desired thickness. Garnish with green onions and serve with white rice!