1-2 pork hocks / ham bones / whatever. Can even be frozen.
1-2 diced onions
a bunch minced garlic (2-10 cloves)
1/3 cup apple cider vinegar
salt
black pepper
red pepper flakes
Directions
Remove stems from greens, cut into 1-2 inch strips. (Exactitude is not required.)
Sweat onions and garlic in Instant Pot on saute setting. Add some salt and pepper while it's cooking. You can throw in some flaked red pepper if you like.
Add 1/3 cup of apple cider vinegar and 2/3 cup water to deglaze. Add pig parts and greens, then pressure cook for 15 minutes.
Let stand for 10 minutes then release pressure, then add additional seasoning as desired. You can leave unsealed on "slow cook" setting for as long as you like.