As an indication of just how effective the immune booster effect is, the upscale grocery stores have pickle bars with all kinds of fermented foods in open air containers un refrigerated. They naturally kill pathogenic bacteria so they don’t rot without refrigeration.
Try some of the olives, side by side with canned olives.
The flavor is definitely superior.
My grandmother used to make pickles, among other things. they were incredibly delicious.
Klaussen Dills are about the only thing close to what she used to make.