Starbucks newest, limited-time drink, the
Cocoa Cappuccino is basically a cappuccino with a bittersweet mocha sauce.
Specifically it is a shot or two of espresso (depending on what size drink you buy), bittersweet mocha sauce (which should be less sweet than their normal mocha sauce), steamed milk, and a dollop of milk foam to finish.
Basically, it should be taste more coffee-like and less sweet than a typical Starbucks Mocha.