In the corridors of a prison, a detainee – who is a bartender when he is not in jail – hurriedly wrote this recipe on a torn piece of paper in answer to the question: do you have a recipe for a blue cocktail?

10 ml blue curaçao
10 ml white rum (Jamaïcan, if possible)
10 ml tequila (Mexican, if possible)
10 ml dry vermouth (Cinzano or Martini bianco)
10 ml sugar cane syrup
20 ml Schweppes

Mix (shake) and serve in whichever glass you want.