Is this possible/likely? The recipe called for equal parts fruit, sugar, and apple cider vinegar, I used a cold-process (no boiling of the vinegar), and it tasted fine until I noticed a ghostly floating thingie in the bottom of the jar that looks just like what was once told was a mother of vinegar. Is it? Will it hurt anything? Should I remove it? Can I still use the shrub (hope so - it's awfully good).