Flavouring
Olive Brine
Olive Brine is a flavouring with no alcohol in it, used in 1 drink on this site.
Not to be confused withPickle brine (The liquid from a jar of cucumber pickles, used in a Pickleback rather than a Dirty Martini; the two are not interchangeable in either drink's flavour.)

https://upload.wikimedia.org/wikipedia/commons/0/0c/GreenOlives_largejar.jpg by Whitebox at English Wikipedia
CC BY-SA 3.0 · Cropped, white-balanced, graded and re-encoded to WebP by eXir.
CC BY-SA 3.0 · Cropped, white-balanced, graded and re-encoded to WebP by eXir.
A large jar densely packed with pimento-stuffed green olives in brine
Composition
Strengthnone
Density1 g/ml (estimated)
Sugar0 g per 100
Acid—
Energy0 kcal per 100
Animal originNone
Allergensnone listed
USDA FoodData Central (Branded) · 2181196. PREMIUM OLIVE BRINE (Filthy Food LLC), taken as the reference bottle: it is sold specifically as a cocktail ingredient for the Dirty Martini rather than being decanted from a jar of eating olives, though the two are close in composition. Public domain figures. No titratable acidity is published, so acidPercent is left off. Density has no measured source and is estimated as water-like, since the liquid is almost entirely brine rather than oil.