A tiki drink that may leave you in a fog.
Add all ingredients, except sherry, to a cocktail shaker filled with ice. Shake hard and strain into a highball or Tiki glass filled with ice. Float the sweet sherry on top.
There are a lot of variations of this drink. While sherry is traditional, a cherry brandy (such as Cherry Herring) float, is a popular variation. Some versions sub equal parts lemon and lime for lemon. Some swap out the brandy for Pisco. Some swap the light rum for gold rum.