A classic British cocktail is a drink that has been around for a long time and is considered to be a true classic. There are many different classic British cocktails, but some of the most popular ones include the gin and tonic, the martini, and the whisky sour.

The gin and tonic is a drink that originated in India in the early 1800s. It was originally made with gin and quinine water, which was used to prevent malaria. The martini …