Robusta coffee is considered a lower grade than the arabica coffee we sell, and is used in most of the world's non gourmet coffee products. Need a jolt? - Caffeine is bitter, and robusta typically has double the caffeine of arabica coffee, and has flavors described as funky, earthy, rich, and thick. It is often used in a 50/50 blend to make espresso coffee, as its thickness adds to the creama espresso is famous for. Our robusta is is the highest grade 1 (bean size 16) from Vietnam.