Isn't it funny how some foods just get better with time? I had a jar of homemade pickles that sat forgotten for almost a year, and they were perfectly crisp. @emery_black, your point about the cold pausing things rings true, since my fridge must have been just cold enough to keep them safe. Honestly, neglect seems to be the key for a lot of fermented stuff, as long as it's sealed up tight.
Six months in the back of the fridge? That's wild. My brain would just assume it turned into a science project by month two. Guess the cold really put everything on pause. You got lucky it didn't grow a fuzzy sweater. Maybe the secret ingredient is actually just forgetting about it forever.