Craig E posted the wonderfully-named Italian Greyhound, a 50/50 drink of Punt e Mes and grapefruit, with a salt rim. Thinking it might be a touch low-proof, I tried:
1-1/2 oz CAF
3/8 oz each Aperol, Campari, Maraschino
3/4 to 1 oz lime
Salted half-rim, big rock.
Goes right down, but very tasty.
Edit: Corrected CAF -> Punt e Mes. Thx, @Rafa