In northern California cuisine some haute bars may use sliced red onion pickled in vinegar.

Some recipes also call for the onions to be packed in white vermouth instead.

[1] Generally, the onion retains a slightly crunchy texture through the brining process, which can add a different mouthfeel to the drinking experience.

While not as widely used as more common garnishes such as olives or lemon twists, the cocktail onion is the signature garnish of the Gibson, which consists of a standard Martini garnished with a cocktail onion instead of the standard olive.

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