Hot chocolate is a hot drink made by the Tau'ri on Earth, sometimes used interchangeably, though this is technically incorrect, as a term for cocoa.
The clone of Colonel Jack O'Neill was given hot chocolate rather than coffee, because his clone was around thirty years younger than the original O'Neill. (SG1: "Fragile Balance")
In 2008, Kramer Innovations was giving away hot chocolate during their demonstration of a possible solution (later found unstable) for global warming, by cooling down the base. (SGA: "Brain Storm")