Why Do Wine and Champagne Bottles Have Those Indentations at the Bottom?
WikiCommons
So what is really up with wine and champagne bottles having those indentations at the bottom? While some of us probably thought they were for show or for some fancy decoration, there’s a better explanation.
The indentations are there to compensate for the pressure of the contents of the bottle when it goes through the corking process. The bottoms and sides of bottles are considered to be weak spots and the indentations help to evenly distribute the pressure inside. Champagne bottles have much deeper indentations since they are under much more pressure due to the carbonation.
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