Crushed ice helps. Second sip is where it's at. I was thinking 3/4 cynar would help this, then saw it in the comments. Do it next time. There is a little bit of a grapefruit taste, but better—more complex.
One of my favorite summer drinks. — ★★★★★
1/4/20: Great drink, made with 2 tsp 2:1 simple. Will definitely make this in the summer. — ★★★★
A daiquiri substitute, and extraordinarily so. Refreshingly tart, but not puckeringly so. Very versatile: I can see having two of these at the Club in the evening, or by the backyard pool in mid-afternoon on a Saturday. Has — ★★★★★
Light and surprising accessible. Good drink for those new to gin and/or amari. — ★★★★★
I have to say that this is a wonderful cocktail. It is plenty interesting, even for the jaded Fernet-chugging cocktail geek. Yet it's fairly accessible for those just getting starting to explore amaro-based cocktails. I bumped up the Cynar to 3/4oz and backed the simple down to 3/8oz, which was a nice balance for my taste. Where the bitter grapefruit flavor comes from, I do not know.
I used 3/4 oz cynar as that finished the bottle, and I was also generous with the mint. A little less simple and citrus next time, and I'll keep the extra cynar. I'm revisiting recipes I saved years ago and deleting anything I don't love from my cocktail library; this one stays.