Instant Pot Chicken in Gravy with Potatoes and Carrots

oil or margarine or butter or ghee

salt

pepper

frying chicken, cut up into pieces, or 2 drums, 2 thighs, 2 breasts (bone in and skin on)

onion, chopped

garlic, peeled

medium potatoes, peeled and quartered

large carrots, scrubbed and cut into 2 or 3 inch pieces

good quality chicken stock

flour