This is referred to as "Blonding" - the color transition of an espresso pour from dark brown and striped to a light, uniform pale blond. This normally occurs in the last third of the pull and is a signal to end the pour. This overly-blond portion of an espresso is thin, nearly flavourless, and if allowed to continue will dilute the body and taste characteristics of a shot.
Modified on: Thu, 21 Mar, 2019 at 3:33 PM
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