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In American English, a collins glass is a glass tumbler which typically contains Template:Convert.<ref>Template:Cite book</ref> It is commonly used to serve sparkling cocktails, especially long drinks like the Tom Collins or John Collins, as well as fruit juice, water or any cold drinks. Its cylindrical shape, narrower and taller than a highball glass, keeps the drink carbonated longer by reducing the surface area of the drink.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It is a recommended glass for serving an espresso and tonic in.<ref>Template:Cite book</ref>