1/2 oz Mezcal (Montelobos)
1/2 oz Salers Gentian Liqueur
3/4 oz Lime Juice
3/4 oz Earl Grey Syrup (*)
3 dash Grapefruit Bitters (2 wide grapefruit swaths)
Shake with ice and strain into a rocks glass with ice. Garnish with a grapefruit twist.
(*) For every 1 oz of strongly steeped hot Earl Grey tea, add 1 oz sugar. Stir to dissolve. 1 + 1 = 1.5 oz syrup.