Add 60ml white rum, 8ml triple sec, 8ml fresh lime juice, and 8ml maraschino liqueur to a cocktail shaker.
Fill the shaker with ice cubes.
Shake vigorously for 10–12 seconds until well chilled.
Double-strain through a Hawthorne and fine-mesh strainer into a chilled cocktail glass.
Serve immediately, ungarnished.
The Casa Blanca is believed to have originated at the Hotel Nacional de Cuba in Havana during the pre-Prohibition era, where bartenders stretched the classic Daiquiri formula with maraschino and triple sec to add complexity. The combination of two liqueurs demands restraint - keep each at 8ml or the rum backbone will be overwhelmed.
My Bar Shelf reads your shelf and shows you every cocktail you can make from what you already own, including Casa Blanca.