the " punt ".
The punt is the indentation in the bottom of the bottle. When a wine has sediment in it you slowly pour the wine into a decanter and then throw out the last couple of ounces that have the sediment in them. The punt reduces the amount of wine as it displaces volume at the bottom of the bottle.
To effectively cut the bottom of a wine bottle, you can use a glass cutter to score a line around the bottle, then apply hot and cold water to create a clean break.
Decanter or carafe
If you are thinking about a 'wine professional' then a Sommelier
It is called ullage
Not really. Hollow bottom wine bottles are used for sparkling wines, of which the best known is Champagne. Sparkling wines are made by allowing a final fermentation right inside the bottle, after it has been sealed. This produces a small amount of yeast inside the bottle; this little bit of yeast is called the lees. When the wine has finished fermenting the lees settle slowly to the bottom. The special shape of the bottom of the bottle helps the lees to form a hard sediment, which will stay firmly on the bottom even when the bottle is opened. Wines that are not sparkling are left to mature in a wooden barrel, and the lees stick tightly to its sides. When the barrel is finally tapped and bottles are filled from it, no lees get in, so there is no need for a special bottle. The price of sparkling wines may be slightly higher than still wines, but the shape of the bottle is just an incidental.
The hollow bottom has nothing to do with easier pouring but only with glass STRENGTH. Glass is weak in bending (not many 12ins rulers about!) but strong in tension and compression. The "cone" at the base is under compression form the pressure inside the bottle and this puts the end of the bottle (the tube part) into tension. If the base was flat, instead of cone shaped , it would 'bend' from the pressure and thus break.
To safely cut the bottom off a wine bottle, you can use a glass cutter to score a line around the bottle, then alternate heating and cooling the bottle until it breaks along the scored line. Be sure to wear safety goggles and gloves to protect yourself from glass shards.
The indentation in the bottom of the bottle is the puntIt helps the bottle to hold the high pressure of sparkling wine/champagne. It accommodates the pourer's thumb for stability and ease of pouring. Some wine waiters use the punt to hold the bottle with their thumb in the punt when pouring wine.
the neck
To safely and effectively cut the bottom off a wine bottle, you can use a glass cutter to score a line around the bottle, then alternate heating and cooling the bottle until it breaks along the scored line. Remember to wear safety goggles and gloves during the process to prevent injury.
To safely and effectively cut the bottom off a wine bottle, you can use a glass cutter to score a line around the bottle, then alternate heating and cooling the bottle until it breaks along the scored line. Remember to wear safety goggles and gloves during the process to prevent injury.