What is Quarter bottle of champagne?

A quarter bottle of champagne, also known as a "demi" or "split," typically holds 187.5 milliliters of champagne, which is equivalent to about one-quarter of a standard 750-milliliter bottle. This size is often used for single servings or small celebrations and is popular for toasting at events. The quarter bottle is convenient for smaller gatherings or for those who prefer to enjoy champagne without opening a full bottle.