Walter Mondale

Use 2:1 demerara sugar syrup for its listed portion.

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

Create a garnish by twisting a strip of lemon zest, setting it aside for later use.

Combine Calvados or your choice of apple brandy or straight applejack, Lustau Amontillado Los Arcos Sherry, Ferrand Dry Curaçao liqueur, Giffard Poire William liqueur, and the brown sugar syrup in a mixing glass.

Add ice to the mixing glass and stir thoroughly until well-chilled.

Fine strain the mixture into the pre-chilled coupe glass.

Express the lemon zest twist over the surface of the cocktail to release its oils, then use it as a garnish.