• Juice of 1 lime

• 1 1/2 oz. simple syrup*

• 1 1/2 oz. white rum or gin

• 3 oz. grapefruit juice

• Sparkling wine or champagne


• 1 grapefruit, quartered

• A few fresh mint leaves


1. Place a few ice cubes in a mason jar.

2. Add the first four ingredients for the cocktail to the glass and top up with sparkling wine or champagne.

3. Garnish with quartered grapefruit and fresh mint.

* A common ingredient in cocktails, simple syrup is easy as pie to prepare: mix 1 cup of water and 1 cup of white sugar in a small saucepan, then dissolve the sugar over low heat stirring continuously until the mixture thickens.