Hard Cider Fermentation

Find out if it is safe to stop the fermentation using boric acid.
Hard Cider Fermentation - Articles
Hard Cider Fermentation


During fermentation of hard cider, is it safe to stop the fermentation using boric acid?


It sounds like the cider did not have sufficient time to completely ferment before sealing. You should measure the sugar content with a hydrometer and periodically take measurements as it ferments until the readings level off to a minimum value.

Or you can attach a tube to a fermentation vessel allowing the escaping gas to bubble through a water trap. When the bubbles stop, the cider is done. At this time, the sugar has been fermented to alcohol and very little additional CO2 will be generated.


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