"Mary Fisher" wrote in message
. net...

"John Rumm" wrote in message
...
Mary Fisher wrote:

You're not a winemaker are you ?

Nope, my mum used to be though. I Dabbled in home brewing a few years
back.

Citric acid isn't used for sterilising but to balance flavours.

I thought it was to provide an environment that the yeast thrived in.

IIRC you used to mix citric acid and sodium metabisulphate to make a
sterilising solution (SO2 being the result).