This seems to be the appropriate thread to ask this question--I have two pear trees and a lot of unripe pears that had to be picked. I want to make pear butter out of them but wondered if they have to be ripe. I need to use the unripe pears right away for various reasons. Does anyone have experience with unripe pears? I know they'll ripen eventually but I don't want to wait.
You can make "pear honey" Pear Honey recipe - old-fashioned type
This actually turns out better if the pears are just beginning to ripen - when they are still very firm.
You can also slice and dry some of the pears - after they are partly through the drying process you can put them into simple syrup and glacé them. This is only possible with unripe pears - as soon as there is a bit of "give" when you press into them, they are too ripe.
They do have to be at least beginning to ripen to have pear butter turn out well.
I also make pickled pears from the recipe on this site.