I have a shop bought 3/4 empty 'organic apple cider vinegar with mother' . It has developed a large 'mother' which I understand can be used for fermentation and health purposes.
Don't fancy it myself so free to collector before bin day!
Mother of organic cider vinegar. Fermenting, health uses . (Llanymynech SY22)
This offer has been gifted to someone and is no longer available.