Goals Boost is nice and fruity and has a hint of lemon. Very tasty beer, which is special because Cascara has been added to it. This is a type of coffee berry that is used in many countries as a basis for tasty drinks. In the United States they also call Cascara Mother Nature's Red Bull. It was long assumed that it contains a lot of caffeine. But this turns out not to be the case. Recent research shows that cascara contains only a quarter of the caffeine of a coffee bean.