Or? Caffeine infused, but either way? It’s got caffeine. Principle, active ingredient in coffee, tea, coke, and the list goes on.
Mexican Coke is common around here. Noted for its use of real sugar as compared with High Fructose Corn Syrup.
The recipe for the mixture is here, basically, espresso and Mexican Coke.
I played with it, a mild, dark roast breakfast blend of coffee, and Mexican Coke.
Interesting. Needs further refinement. Has merit.