Closure made of different materials (glass, rubber, wood, ceramic, plastic, silicone) for a barrel, which is inserted into the bunghole. To allow gas to escape or allow ventilation, the bung can also be used loosely or this has a corresponding device (valve), which allows this only in one direction. This is also called Gärspund (see under Gäraufsatz ). In this case, the keg is stored so that the bunghole is at the top. Do you want during the aging in oak barrels To achieve that no ventilation can take place, then the keg is rotated so that the (in this case tightly closed) bunghole is below the liquid level. This position is also referred to as "two o'clock". The advantage is that the one forming by the evaporation whitespace forms on the smooth barrel inner wall.
On the other hand, leaks can occur in a "12 o'clock position", especially with wooden cones, because they can dry out in the air bubble. There is a risk of this oxidation and also one shrinkage larger extent. The Fill up the barrels pass through the upper bunghole, the racking (Transfer to other containers) or broaching (for taking = enjoyment) of wine but through a drain bung on one of the two barrel floors. A "full-to-the-mouth" cask is called "spitfull", which is also popular for a pronounced intoxication level (someone is spiteful) is used. In a barrel transport, the bunghole with a cross disc locked. See also a complete list of relevant keywords below barrel,