I note that a company calling itself Death Wish Coffee has just introduced what it claims is the world's strongest coffee. They caution darkly: "Death Wish Coffee is the most highly caffeinated premium dark roast organic coffee in the world. This is Extreme Coffee, not for the weak. Consider yourself Warned."
Yahoo! Shine reports:
A single 12-ounce cup of coffee at Starbucks contains approximately 260 milligrams of caffeine according to EnergyFiend, a caffeine database. The same cup from Death Wish Coffee contains 520 milligrams, double the amount, and enough to give you some serious jitters.
. . .
But before you indulge in that hopped-up brew, proceed with caution.
Last year, the FDA posted several warnings about illness and deaths related to the consumption of energy drinks that contain large amounts of caffeine. Monster Energy, which has been named in a suit involving death of a teenage girl by cardiac arrest after she drank a 24-ounce can, contains 480 milligrams of caffeine. According to Consumer Reports, the daily amount of caffeine consumed for a healthy adult should not exceed 400 milligrams.
There's more at the link. However, a Huffington Post reporter wasn't all that impressed by it.
Personally, I think I'll pass . . . but if any readers try the stuff, do please let us know in Comments how you found it.