from The Craft of the Cocktail
Blend all the ingredients with a handful of ice and strain into a special frozen-drink glass or into a medium-size wineglass.
Constantino (Constante) Ribalaigua Vert at the El Floridita Bar in Havana, Cuba, created the original frozen Daiquiri. I adapted Constante's recipe to accommodate today's larger glassware and to sweeten it slightly. Constante added the juice of the Marsh grapefruit, a very sweet seedless variety from the Isle of Pines near Havana, as well as maraschino liqueur to provide a delicate floral note.