Robusta coffee is coffee made from the Coffea canephora plant, a sturdy species of coffee bean with low acidity and high bitterness. C. canephora beans are used primarily in instant coffee, espresso, and as a filler in ground coffee blends.
KOC is Arabica blend but other coffee beverages such as Black Coffee, Mocha and Supreme are using the same blend similar to our Latte, a mixture of Arabica and Robusta Coffee beans, even though it is not as specified as Latte in OG website. Basically Robusta is bit higher in caffeine and produce a less sweet and bolder flavor.
Hot Chocolate doesn’t contain any coffee beans.