The Savoy Cocktail Book is a tome compiled by Harry Craddock and published in 1930. Many of it's recipes still haunt the modern barscape and many classics are credited to Harry himself. The Alaska is a simple and delicious drink that appears in the Savoy's pages. Classically styled dry gins seem to show best in this drink but tasty times can be had using just about any gin - or other spirit. I found a happy balance using Plymouth and Regans' orange bitters but preferred it sans bitters. This is a boozy refresher and goes down quite easy especially when served as cold as possible.
1.5 oz Gin - depending on gin slightly more or less might be needed to achieve better balance
.5 Yellow Chartreuse
2-3 dashes orange bitters
Stir ingredients together with ice (I like mine shaken hard. The little bits of ice seem to add to its refreshing qualities) and serve up in coupe or favorite cocktail glass.
Try replacing the gin with other spirits like tequila or bourbon and try other bitters for fun variants.