Doppioespresso (Italian:[ˈdoppjo]) is a doubleshot which is extracted using double the amount of groundcoffee in a larger-sizedportafilter basket.[1] This results in 60 ml (2.1 imp fl oz; 2.0 US fl oz) of drink, double the amount of a single shot espresso.[2]Doppio isItalianmultiplier, meaning 'double'. It is commonly called a standard double, due to its standard in judging the espresso quality inbarista competitions, where four single espresso are made using two double portafilters.[3]
A single shot of espresso, by contrast, is called asolo ('single') and was developed because it was the maximum amount of ground coffee that could practically be extracted by lever espresso machines. At most cafés outside of Italy, a doppio is the standard shot. Because solos require a smaller portafilter basket, solo shots are often produced by making ("pulling") a doppio in a two-spout portafilter and only serving one of the streams; the other stream may be discarded or used in another drink.[4]
The caffeine content of a doppio can vary, but typically consists of 58–185 mg of caffeine, often averaging around 150 mg.[5]
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