What is the key characteristic of a dry Martini?

A dry Martini is primarily defined by its use of dry vermouth, which gives this classic cocktail its distinctive flavor profile. The term "dry" specifically refers to the fact that less sweet vermouth is used in comparison to a standard Martini or sweet Martini, which typically incorporate sweet vermouth. The use of dry vermouth balances the botanicals of the gin and creates a crisp taste, making it a favorite among cocktail enthusiasts.

In a conventional dry Martini, the ratio of gin to vermouth can vary, but the emphasis is always on the inclusion of dry vermouth, often leading to a more savory and less sweet drink overall. While traditional ingredients like gin are critical to the cocktail, it is the selection of dry vermouth that fundamentally characterizes a dry Martini.

Other options, such as sweet vermouth or lemon juice, do not align with the defining characteristics of a dry Martini, as they introduce sweetness or acidity that diverges from the intended flavor profile of this specific drink. Additionally, including gin only does not fully encompass the definition since vermouth is a crucial component in defining its dryness.