From Wikipedia:
Crème de menthe is an ingredient in several cocktails, such as the Grasshopper and the Stinger. It is also served as a digestif and used in cooking as a flavoring (see Mint chocolate). It is also a primary component of the popular South African shooter known as the Springbokkie.
The traditional formula steeps dried peppermint or Corsican mint leaves in grain alcohol for several weeks (creating a naturally green color), followed by filtration and addition of sugar.
