Now You Know

Chill a cocktail coupe in advance to ensure optimal temperature.

Combine gold rum, fino sherry, Cynar, Licor 43, and 3 dashes of Peychaud's Bitters in a mixing glass filled with ice.

Stir the mixture until well-chilled and properly diluted.

Strain the cocktail into the pre-chilled cocktail coupe.

Express the oils from a coin of grapefruit peel over the drink, then use it to garnish the cocktail.