Why do some wine bottles have dimples in the bottom?

Question

Why punt in wine bottle?

Answer 1

Check this video

Wine expert Nancy Hawks Miller explains the purpose of the dimple on the bottom of the bottle.

Answer 2

The dent is called punt, also known as a kick-up, refers to the dimple at the bottom of a wine bottle. There is no consensus explanation for its purpose. The more commonly cited explanations include: It is a historical remnant from the era when wine bottles were free blown using a blowpipe and pontil.

Answer 3

Bottle Indents

We have often seen a bottle indent on a wine bottle. Yeah? The scientific reason for that is to keep the pressure even when the bottle is corked. The rule is; higher the pressure, deeper the indent.