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Do I Need an Airlock for Fermentation?
I have been fermenting vegetables in a beautiful, old crock with success. The problem is, having only one vessel, I can only ferment one vegetable at a time. Canning jars are an option, but both the crock and the canning jars are less than ideal in terms of letting air in, as gases escape.
I purchased 4 – 1/2″ Fermenter Lid Grommets and 4 Airlocks at a wine shop. The grommets were $.80 each and the airlocks were $1.29 each. The grommet creates a seal between the airlock and the fermenting jar lid. The airlock allows CO2 to escape during fermentation, and prevents air from going back into the jar.
Mike used a gasket hole punch, rather than a drill as in the post we read, and punched a 1/2″ hole in 4 wide mouth canning jar lids. He had no trouble inserting the grommets (as in the post), and then pushed the airlocks down through the grommet. Voila! For $8.86 (I paid $.50 tax), I had 4 fermenting lids.
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