1 1⁄2 oz Reposado Tequila, Siete Leguas Reposado
3⁄4 oz Bonal Gentiane Quina
3⁄4 oz Herbal liqueur, Yellow Chartreuse
1 twst Lemon peel (expressed and inserted)
Stir, strain, one big rock, express and insert twist.
Huckleberry hasn't gotten back to me about whether these ratios are correct; they're my guess based on the flavor of the drink, and seem to work.