Store: Refrigerate leftovers in an airtight container for up to 5 days.
Freeze: In airtight container for up to 3 months.
Reheat: Reheat by simmering on low on the stove or in Instant Pot with a splash of that broth or water. If frozen, thaw on the counter for hours first.
Canned beans? No, you will need different amount of water which I have not tested.
No immersion blender? Mash with a potato masher for a chunkier texture or transfer to a regular blender. If using a regular blender, remember to keep the lid slightly open and use a hand towel to release the steam but not burn yourself.