Enrico Pallazzo

Chill a cocktail coupe glass in advance to ensure optimal serving temperature.

Prepare a grapefruit zest twist for garnish, setting it aside for later use.

Combine the bourbon whiskey, Strucchi Rosso Vermouth, Aperitivo Luxardo, gentian liqueur, and Bob's Grapefruit Bitters in a mixing glass.

Add ice to the mixing glass and stir until the mixture is well-chilled and properly diluted.

Strain the mixture into a carbonation device.

Carbonate the cocktail and pour it into the pre-chilled coupe glass.

Express the grapefruit zest over the cocktail to release its aromatic oils, then place it as a garnish on the rim of the glass.