The Papa Doble, also known as the Hemingway Daiquiri, is one of the most storied drinks of all time.

There’s nothing girly about this frozen daiquiri. Hemingway used to down these at the famed Floridita bar in Havana, Cuba. Legend has it that he once put away 16 of them in one sitting, each served in a glass the size of a vase. So the next time you’re sitting pool side thinking of mixing up a frozen cocktail, make it a Papa Doble. And in a nod to the man himself, serve them in vases.

The below recipe is taken from the memoir, Papa Hemingway, by A. E. Hotcher and describes the cocktail as it was served at Floridita. Common belief suggests that this recipe has been altered from Hemingway’s proportions to accommodate mortals.

Hemingway Daiquiri

3 ounces white rum (Bacardi or Havana Club, if you can find some)
Juice of 2 limes
Juice of 1/2 grapefruit
6 drops of maraschino liqueur

Fill a blender one-quarter full of shaved ice. Add rum, lime juice, grapefruit juice and maraschino liqueur. Blend until well mixed and serve in a massive goblet, Hemingway style. A popular variation is to shake all ingredients with ice, and pour over shaved ice into a goblet or cocktail glass.