Place all ingredients in the pot: chicken, carrots, celery, onions, garlic, parsnip, wild rice, vegetable/chicken broth or water, salt.
Cover and set the Instant Pot on Manual High Pressure for 30 minutes. Then, do a quick release steam using the valve on top.
Open the pot, remove the chicken and shred it. Add it back to the soup.
On the stovetop- How To make Roux:
Melt butter in a saucepan on medium heat. Add flour and whisk for 2 minutes, so it gets cooked. Continue whisking while you slowly pour the half and half ( or heavy cream or milk). Add a pinch of salt and mix until you obtain a creamy, smooth mixture.
Combine the soup with the sauce:
Pour the sauce over the soup in the Instant Pot and stir to incorporate it.
Serve warm in bowls with crusty artisanal bread or a baguette.
Notes
Can I replace half and half with other dairy product?Yes, you can do heavy cream or regular milk as you prefer.Can I skip the chicken?Yes, you can skip the chicken and make it vegetarian. You could also add mushrooms instead of chicken.