Piccolo is the common name for a small Champagne bottle holding 187.5 millilitres.
A piccolo contains one quarter of a standard 750-millilitre bottle and is often sold as an individual serving. In English-speaking markets, the same size may also be called a split or quarter bottle, but “piccolo” is the canonical single-name answer for the question.
Small bottles are useful for single servings, hospitality and transport, although Champagne producers must still carry out the wine’s required bottle fermentation and ageing processes. Their small volume also means the wine has a different ratio of liquid to glass and closure than a full-size bottle.
Piccolo should not be confused with a half-bottle, which holds 375 millilitres. Larger named formats include the magnum at 1.5 litres and the jeroboam at 3 litres.