Tips: If you are not using a pork bone, any chunks of cooked pork from fatter parts of the animal will work like butt or shoulder. Or chunk up some raw pork and cook it in the pan before adding the veggies, fat is your friend in this recipe so go for a cheap cut.
I have a slow cooker with a stove top safe insert, so I mix all the soup on top of the stove and get it boiling before moving to the slow cooker, this helps get everything started cooking especially if the stock is cold.
Homemade stock vs. store bought: for simple Posole use what you have! It’s going to have a ton of flavor and the fat and cartilage on the fresh ham bone is going to make rich broth so store bought is fine.