Mix equal parts Campari, sweet vermouth (the red one) and gin, and serve over ice with a strip of orange zest.

FORBES: The Beer-Drinker's Cocktail

Sprinkle with the ginger and the orange zest.

NPR: Recipes: 'Ten'

You can omit the white chocolate without much harm and lime or orange can be swapped for the lemon zest.

NPR: How to Eat a Cupcake