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Why do the corks keep popping out of my bottles? What am I doing wrong?!


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Enzo Raffaele-Addamo from GloPak USA Corp.

There can be many variables on corks popping out: Bad bottle enclosure inside diameter. Faulty undersized corks or a combination of both. 

Fermentation is not finished leftover yeast cells, not fined or filtered properly, not sulfited correctly. Secondary fermentation (Malolactic fermentation) has started or never finished and has started in the bottle because it was not treated with lysozymes prior to bottling. Did you de-gas the wine? Or again a combination. Let me know if I can help in anyway. Enzo Raffaele-Addamo [phone number]

Oct 24, 2016

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Kinnek Supplier

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Kinnek Knowledge Team

The reason the corks are popping out is most likely due to the fact that you're bottling the wine too early, while it's still fermenting. Young wine will continue to do so in the bottle. 

As the yeast consumes whatever sugar's still in the wine, it produces alcohol and CO2. In the fermenter, the CO2 escapes through the airlock, so that once you bottle the wine, that CO2 has no place to go. Once the wine has absorbed the small amount of CO2 it's able to absorb, the pressure in the bottle continues to build, causing the cork to pop-out of the bottle, or the bottle to explode. 

To stop this from happening, you should never bottle any wine that hasn't been stabilized. Once apparent fermentation has ceased, rack the wine in order to allow it to absorb any additional oxygen that might remain.

Aug 31, 2016

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