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.