How do you prepare a "Dirty" martini?

The preparation of a "Dirty" martini primarily involves the addition of olive juice, which differentiates it from a classic martini. The olive juice gives the cocktail its distinctive, savory flavor, hence the term "dirty." This addition not only changes the taste profile, making it more pronounced and briny, but it also gives the martini a slightly cloudier appearance, which is a hallmark of the drink.

The classic martini is typically made with just gin and dry vermouth; however, to create a dirty martini, one would typically start with the same base ingredients and then incorporate the olive juice. The amount of olive juice can vary based on personal preference, allowing bartenders to customize the drink's saltiness and taste intensity.

The other choices do not align with the traditional preparation of a Dirty martini. Sweet vermouth is normally used in a Manhattan or a sweet martini but is not required or typical in a dirty martini. Additionally, while a martini generally features no vermouth, omitting it entirely does not create a dirty martini. Finally, tonic water is associated with different cocktails like a gin and tonic and would not complement the flavor profile of a dirty martini. Therefore, the inclusion of olive juice is