Interesting, posted this in a cocktail community, with DG and the Salon 39 as reference and someone asked if it was a small riff on the "Mistaken By Strangers" from Misty Kalkofen from Boston, Brick & Mortar Bar. Same drink, same ratio, just without the bitters. Served in a rock glass, but also without ice.
And it's a really nice one btw, first 1-2 sips I wasn't sure since the flavour combination is quite unique but really liked it after that.
Havana 7 as all the mentions in green color are just paid product placements and in 95% of the cases a bad choice (or at least far from ideal) for the drinks, sadly. As he states later, it's originally with Zacapa 23. I'd recommend El Dorado 12 or 15 for example.