you can ferment almost anything... you should draw the line somewhere.
if you want saur kraut wine, drink the juice, its all ready fermented.
your a very new wine maker that does not have the whole picture in a frame, yet you want to take on the fruits/vegetables that almost no one use....good luck to you.
maybe you will be the only to drink, i do not know.
arent you the person with having trouble with prickly pear.
good luck...again./