The Martini cocktail is a popular drink that is made from gin, dry vermouth, and orange bitters. It was originally created in the 1800s in London. The original Martini cocktail recipe was a mix of Gin and Vermouth with a dash of orange bitters added for flavor. In the 1900s, people started to switch from Gin to vodka as well as adding an olive garnish.
In the US version of this cocktail, it is usually served with vodka, but can also be served with gin or any other type of distilled spirit. Many people also add sugar or simple syrup to sweeten the drink before mixing it with ice and pouring into a glass.