7. From their website:
Death Wish Coffee is a breakthrough in the coffee world. Typically dark roast coffee has less caffeine in comparison to lighter roast coffees due to the caffeine being stricken from the bean during the roasting process. Here at Death Wish Coffee we have found a coffee bean with close to 200% the amount of caffeine as your typical coffee shop coffee; we roast it to a medium-dark for a strong and robust flavor and then we grind it to the proper level for extreme potency. We roast to order and inspect before and after the roasting process to ensure correct moisture levels, bean density, and uniformity.
(h/t Metro UK)