im not actually a big fan of strawberries but I want something that I can yield a lot from and then ferment the shit out of and I can't think of any other berry or vine fruit...
Apples!
If you lived nearby, Sho I could give you a couple hundred pounds of Gooseberries, too.
I grow far more fruit Pears, apples, gooseberries, than I can ever use.
Fermentation basically only requires natural sugars.
And of course there's always potatoes, too.
Huge yields, not a whole lotta work, and you can keep the pests off using stuff that won't poison your ground, too.