Combine the first seven ingredients in a medium-sized bowl.
Place the meat in an Instant Pot and pour in the sauce. Close the lid and turn the pressure valve to “sealing.” Set it on manual, high pressure, and cook for 20 minutes.
When the cooker beeps, let it sit for 5 minutes to gradually release the heat. Then, turn the pressure valve all the way to “venting” for a quick pressure release.
Open the pot, turn on the sauté function and bring the sauce to a boil.
Add the cornstarch and string beans.
Cook for 7 to 10 minutes, or to preferred doneness, while stirring it occasionally.
Serve with rice and enjoy!
Notes
Be careful when turning the valve from the "sealing" to the "venting" position as the steam is extremely hot that you might burn yourself. You can always use a wooden spoon to do this from a distance, rather than your hand.