Shot Variables
See also: Doppio, Ristretto, and LungoThe main variables in a shot of espresso are the "size" and "length". This terminology is standardized, but the precise sizes and proportions vary substantially.
Cafés generally have a standardized shot (size and length), such as "triple ristretto", only varying the number of shots in espresso-based drinks such as lattes, but not changing the extraction – changing between a double and a triple requires changing the filter basket size, while changing between ristretto, normale, and lungo require changing the grind, and cannot easily be accommodated in a busy café, as fine tweaking of the grind is a central aspect to consistent quality espresso-making, which is disrupted by major changes, such as ristretto to lungo.
Read more about this topic: Espresso
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