I love making soup in my instant pot - and this one is super fast, easy and tasty! I use evaporated milk which I think is pretty unique - but it tends to handle heating, and re-heating, better than regular milk, half-and-half, or cream.
Set your Instant Pot (or pressure cooker of any brand) to Browning, add the sausage and chop up into small bits - brown until cooked through and remove to drain
Add onion to fat that remains in your pot and brown. I don't actively "leave" fat in the pot, but there seems to be enough there to brown the onions. When the onions are transluscent, add in the garlic and brown lightly - do not burn.
When the onion is cooked, add in the oregano and stir well, add back in the sausage, potatoes, and chicken broth.
Place lid on your Instant Pot/Pressure Cooker. Set to "High Pressure" for 6 minutes and let it rip. When timer goes off, allow for a 10 minute Natural Pressure Release - then manually release the rest of the pressure.
When you get the pot open, set the temperature to "Simmer" and then add in the chopped kale and the evaporated milk. Heat through, taste for salt, and let sit on simmer until the kale softens.
Serve with crusty break and a salad - its like eating out, while eating in!