Ingredients

3/4 ounce silver tequila (Heuser recommends Tapatio Blanco)

3/4 ounce sweet vermouth (Heuser recommends Carpano Antico)

3/4 ounce Campari

2 dashes orange bitters (The Bitter Truth is a recommended brand)

Preparation

Fill a Delmonico or Old Fashioned glass with ice and add ingredients. Stir briefly to mix and chill, and garnish with a grapefruit twist.