The groove at the bottom of the wine bottle is also called "Punt". Its professional term is "punt bottom". Why is there a groove under the wine bottle? Some people say that the deeper the groove, the better the quality of the wine. Others say that the groove is to reduce the inherent space in the bottle, with the purpose of putting less wine in a larger bottle? In fact, these are not the real intentions of the groove. There are four main reasons for the design of the groove:
(1) With the groove, the structure of the wine bottle is stronger, which is conducive to the more stable placement of the wine bottle.
(2) The groove makes the structure of the wine bottle more solid. Especially when filling sparkling wine, ordinary glass bottles are prone to explosion, and the groove can effectively avoid the chance of the wine bottle exploding.
(3) It is conducive to the preservation of red wine. The groove can increase the convenience of serving wine now.
(4) The groove can accumulate sediment in the wine. This is crucial for those wine growers who did not have low-temperature crystallization technology in early wine production.