Wine Bottle Dip
You would have seen, as a wine enthusiast, that the wine bottle is like a small mountain, right? That part is called the punt or kick-up right there. This protects the wine bottle from falling and breaking, so you enjoy your night. It also increases the strength of the bottle, enabling it to maintain high sparkling wine/champagne pressure. Also, when a stream of water is injected into the bottle and affects the punt, it is spread all around the bottom and removes residues to make it easy for long neck bottles to be cleaned.

Wine Bottle Dip