Mezzo Mix is an Orange-flavored cola produced by Coca-Cola for Germany and a few other countries. The mixture of Coke and Orange soda is pretty good to say the least and fits right in with Lemon Coke and Lime Coke. I stand by my assertion that among the many Coke flavors, Vanilla Coke and Cherry Coke are still the best of the bunch.
If you enjoy a bit of citrus in your cola, give it a try. If you've already had a Orange Coke, then you already know what this tastes like.