1 1⁄2 oz Genever
1⁄4 oz Herbal liqueur, Green Chartreuse
1⁄3 oz Lime juice
1⁄3 oz Simple syrup
1⁄3 oz Half-and-half
1⁄2 oz Soda water
Instructions
Dry shake without soda; shake with soda; serve up in coupe.