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A 19th-century raspberry-rum sour with a dry, fruity finish.
The Knickerbocker is a pre-Prohibition classic that dresses up a rum sour with raspberry syrup and orange curaçao. The raspberry adds a distinct red-fruit tartness that is sharper than grenadine, while the curaçao adds a dry citrus complexity. It is often served with crushed ice, bridging the gap between a Daisy and a Cobbler. It is a vibrant, textured drink that highlights the fruitier esters of rum.

“The drink appears in Jerry Thomas's 1862 *Bartender's Guide*, making it one of the earliest documented fancy rum cocktails.”
Homemade raspberry syrup is preferred; commercial versions can be artificial and cloying.
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