Are you using freshly juiced apples for that fizzy kefir or juice from another source?
We live next to vast apple orchards so yes, the apples are from there. Generally speaking we only take the ones which have fallen to the ground already and won't be sold ;)
I wouldn't even try this with store bought apple juice. Best I would say with freshly picked & freshly juiced.
If you're gonna give this a go just watch out for the pressure created in the bottle after you sleep. (During the day I release the pressure periodically). So the bubbles take a few moments to get going when you open it in the morning but once they do, they can suddenly shoot out of the top in a fountain if you're not careful. I had to learn the hard way obviously! Opening and closing the cap repeatedly till all the bubbles have calmed down is the only way I have found to serve it without a total mess.
Thanks for the lemongrass tip! No point in letting such a beautiful plant die so yes, I will put it in a pot :)
Thanks for the info. i will keep this in mind for next year since i may be relocating to an area with several large apple orchards.