The Gentlemen's Exchange
Stir, strain into old fashioned glass with a large cube or sphere or a Nick & Nora glass. Garnish with an expressed grapefruit swath.
NoMad cold brew coffee concentrate recipe is 455 grams of coarse ground coffee in 2 kilograms cold water. Steeped in refrigerator for 18 hours before filtering.
"The NoMad Cocktail Book", Leo Robitschek, 2019
https://gearpatrol.com/2016/01/15/a-cocktail-that-brings-the-coffeehous… (Name given incorrectly in this link.)
- Boulevardier 12 — Bourbon, Sweet vermouth, Campari, Amaro, Chocolate bitters, Herbal liqueur, Orange peel
- Bitter Chocolatier — Rye, Campari, Amaro, Sweet vermouth, Crème de Cacao, Bitters, Orange peel
- The Moops — Rye, Amaro, Bianco Vermouth, Bitters, Apricot liqueur
- Meditation purpose — Bourbon, Dry vermouth, Apricot liqueur, Amaro Nonino, Elisir Novasalus
- Boulevard des Rêves — Bourbon, Sweet vermouth, Campari, Rum
Note that the NoMad Cocktail book actually lists the recipe as 1 tsp "cold brew coffee concentrate" rather than a more dilute coffee. The concentrate cold brew is given as ~4:1 water to coffee by weight (2 kg to 455 g specifically.) The book also has double the number of dashes of bitters, but it states that those are from Japanese dasher bottles, so the dash count in the link and in the current KC listing are probably correct for more typical dash volumes. Final note is that the grapefruit twist is expressed and discarded rather than being retained as a garnish (stated in the book, but not in link.)
Curated to correct name (Gentlemen's not Gentleman's) per the book. Note about the cold brew coffee concentrate formula added. Book reference also listed.
Version I found had averna rather than foro, coffee liqueur rather than coffee, and double the dashes of everything. It's pretty good, a little too much going on if you want my opinion but pleasant.