Casa Blanca - Rum, Curaçao & Maraschino Mid-Century Sour

The Casa Blanca cocktail takes the familiar rum-and-lime foundation in a more layered direction. Orange curaçao adds concentrated citrus, maraschino contributes subtle cherry and almond-like complexity, and a dash of Angostura bitters supplies spice. The proportions stay restrained so the light rum remains the center of the drink.

A Mid-Century Rum Sour

Published versions of the Casa Blanca have varied over time, and its exact origin is not firmly documented. Cointreau traces a version of the drink to America in 1945, while Stanley M. Jones included a rum, lime, orange curaçao, maraschino, and Angostura formula in his 1977 Complete Barguide. The name is also commonly associated with the 1942 film Casablanca.

What You'll Need

Ingredients

• Light Rum: provides the clean sugarcane backbone and keeps the cocktail crisp.
• Orange Curacao: adds concentrated orange flavor and a small amount of sweetness.
• Lime Juice: supplies the acidity that gives the drink its sour structure.
• Maraschino Liqueur: adds subtle cherry, floral, and almond-like complexity.
• Angostura Bitters: contributes aromatic spice and extra depth.

If you do not have orange curaçao, a quality triple sec can fill the same role, although the flavor may be lighter. Another maraschino liqueur can replace the specified version, but avoid cherry syrup or sweet cherry liqueur because they will make the cocktail substantially sweeter.

Equipment

You'll need a cocktail shaker, jigger, cocktail strainer, ice, and a chilled cocktail glass.

Small Modifiers, Big Difference

The Casa Blanca depends on restraint. Curaçao and maraschino each occupy only a small part of the recipe, but together they turn a straightforward rum sour into something more aromatic and layered. Angostura bitters then ties the citrus and liqueurs together with spice without becoming a dominant flavor.

Substitutions & Variations

Use an aged rum for more oak, vanilla, and molasses character, understanding that it will produce a richer drink than the light-rum version.

Triple sec can replace orange curaçao for a brighter orange profile. If your orange liqueur is particularly sweet, keep the pour restrained so it does not overpower the lime.

For a slightly softer sour balance, reduce the lime juice modestly rather than increasing both liqueurs. This preserves the rum-forward structure.

An orange twist can be added for aroma as a modern serving variation, but the cocktail does not require a garnish.

Helpful Tips

Use fresh lime juice. With only a small number of ingredients, dull or oxidized citrus is immediately noticeable.

Measure the curaçao and maraschino carefully. Their small proportions are intentional, and heavy pours can quickly bury the rum.

Use a restrained dash of Angostura bitters. It should add spice rather than dominate the color or flavor.

Chill the cocktail glass before mixing, shake firmly with plenty of ice, and strain as soon as the drink is properly chilled and diluted.