Which type of vermouth is used in a classic Martini?

In a classic Martini, dry vermouth is the key ingredient that defines the drink's flavor profile. Dry vermouth is characterized by its crisp, less sweet taste compared to other types of vermouth. This allows it to complement the gin (or vodka in certain variations) rather than overpower it.

The classic Martini is known for its refreshing and sophisticated profile, which is achieved through the use of dry vermouth. The typical ratio is usually 5:1 or 6:1 gin to vermouth, reinforcing the dry aspect of the drink. Additionally, the use of a dry vermouth contributes to the cocktail's clarity and elegance.

While sweet vermouth, red vermouth, and white vermouth can be used in various cocktails, they do not suit the classic Martini. Sweet vermouth tends to impart a richer and more pronounced sweetness that is not ideal for the Martini's intended taste. Red vermouth can also provide a different, syrupy profile that is unrelated to a classic Martini. White vermouth, while it can be dry, is different from the specific style used in the classic formulation, which traditionally calls for dry vermouth.