We inform you that "cookies" are used on this website.
If you agree, press the "I agree" button or continue browsing. You can withdraw your consent at any time by changing your internet browser settings and deleting saved cookies.
The most popular airlock. Filling the airlock with a little water makes it act as a siphon; the water closes the beer or wine off from the outside air. However it allows the carbon dioxide formed during fermentation to escape.