Curated to list as Izarra Yellow (added to the KC ingredient list under Izarra.) The yellow is typically listed as jaune in French sources and in some places on the French producer's website...but also as yellow. The green is sometimes listed as vert and other times as verte (feminine). Unfortunately some of the old cocktail books don't specify either color, and as with Chartreuse the two colors also correspond to different flavor profiles. Sometimes another period book will list the same cocktail with the yellow or green specified.

Curator's note: with an overproof barrel-strength bourbon this is quite potent, but tasty. Probably best to stick to a 100 or 101. It might not hurt to shave off a bit more proof with Fee Brothers orange bitters and Old Fashion Aromatic (not whiskey barrel aged bitters).

This seems to be galbato's own creation, circa 2019. However their account email is defunct so efforts to reach them several months ago were unsuccessful.

Willa Brown was a female African-American aviation pioneer/activist. The recipe seems to be a tribute to that background by substituting bourbon for gin in the “Aviation”, although none of that is stated in the submission. The drink came out an interesting gray/green/khaki, and tasted as one would expect with the bourbon-for-gin substitution.

Note that this is essentially a variation of the "Naked & Famous" recipe, but with a bunch of tequila added, while dialing back the mezcal/Aperol/Yellow Chartreuse slightly.