Elderflower vinegar

This was meant to be last year's elderflower champagne.Alas, when I set about making it, I made the mistake of leaving it in the fermenting bucket for too long with the result it started to turn to vinegar. Rather than throw it away, I decided it was better to let it turn fully to vinegar. After all, I use plenty of it in making pickles and chutneys. The vnegar has now been bottled up - I made 32 bottles though I put two into this year's elderflower champagne mix (the vinegar is needed to moderate the fermentation process.