I finally made the homemade butter (re: the previous thread on Euro butter vs American butter). Just heavy cream with a pinch of salt at the end. Turned out wonderfully. How long shoud I expect it to keep in the fridge?
Butter literally sucks the odors and flavors out of the air and holds them.
That said, keep your beautiful homemade butter well wrapped and consumed within 2 weeks. It is best fresh and within a few days. (It's bad when it sours or smells like onions.)
I don't think homemade butter has a chance of long shelf life because it is so darned good! (Like the question of how many licks does it take to get to the center of a tootsipop.)