That seems to require that bitter acidic taste...Meh
When I was in Puerto Rico 20-ish years ago, I discovered El Pico...WOW. Now that's coffee.
Turns out most of the Caribbean / Cuban type coffees I have a weakness for. Cafe con leche seems utterly harmless, but is actually a stealthy way of skipping breakfast, still getting too many calories and a full day's worth (or 3) of caffeine
If you want to discover something...Interesting, try iced sweet Vietnamese coffee. Not a hint of stealth, more calories than should be thought about & just enough caffeine to have you reading Matrix code.