As I said, it has a caffeine content of 928 milligrams per twelve ounce cup, which is more than double the daily recommended dose of caffeine and a lot more than most of the energy drinks that are out there. The title of the world's strongest coffee has been attributed to various brands over the last decade. In 2013, you heard about the death wish, which was a blend that promised 200% of the caffeine content of the average dark roast