I started some bone broth in mine yesterday. I did a 30 min pressure cook then 20 min warm cycle three times. It didn't get enough out of the bones, so now I've got it on slow-cook and will probably leave it for a total of 48 hours (so will be done tomorrow morning). The bones came from a cow my brother and niece raised, then added some stuff from the garden, the store, and my pantry/freezer (some of which I had dehydrated earlier).
The flavor is getting better, and it's pulling a lot of good stuff out of the bones. Hope to get two quarts out of it when I'm done.