Rockstar Energy has a distinct and quite synthetic taste. It’s a pleasant tasting drink with a hefty kick of caffeine and sugars… totalling 60 calories per 100ml that puts it at the potent end of sugar rushes. The can’s design does make it look like you are drinking a can of lager, which could cause raised eyebrows in your office should you choose to consume it there – be prepared to explain it away. I think that has something to do with the black can with a gold star on it. It doesn’t have a great aftertaste, but the drinking experience overall is quite good. Keep it cold because the taste starts to go downhill once it warms up.