Shake with ice, double strain into cocktail glass. Garnish with lemon twist.
This cocktail is very similar in construction to the Gypsy, although with substantially different proportions. Most importantly two unusual/distinctive ingredients are used: Le Gin de Christian Drouin as the gin, and La Gauloise Verte in place of Green Chartreuse.
Drouin's gin is made from apple distillate, has different less juniper forward herbal package, and is finished in calvados casks. The result is somewhere between a very dry mild calvados and a less herbal London Dry gin.
La Gauloise is similar to Green Chartreuse, although sweeter and less vegetal/herbal. Among its known botanicals are angelica, St John's wort, saffron, cardamom, and genepi. La Gauloise is an ingredient in 11 cocktails from the extensive "L'Heure du Cocktail" by J. Alimbau and E. Milhora, 1929
There are completely different Charleston cocktails, while the history and attribution of this particular recipe is unclear. The date on the page was 5/24/24. It and some classic cocktails were in that posting, but it is not apparent who created it or where it was served.