Here's a fun competitive niche: An upstate New York roaster has created what it calls "the world's strongest coffee," an eco-friendly gourmet brew with 200 percent more caffeine than the average dark roast. Death Wish Coffee bills itself as "the responsible coffee company with an irresponsible product." This Jolt cola of java, available for $19.99 per pound online, is the result of a personal quest by the brand founders "to find a coffee that is not only dark, rich, bold and flavorful but also has high caffeine content." As most coffee nerds know, dark-roasted premium brews from Starbucks and other gourmet coffeehouses typically have less caffeine than lighter and cheaper swill served up at late-night diners. That's because the best-tasting Arabica beans are lower in caffeine than the cheaper and comparatively foul option, Robusta beans. Then Arabica beans are roasted until dark, cooking out quite a bit of caffeine in the process. But Death Wish Coffee claims to have solved the problem with an Arabica roast that's organic, fairly traded and shade grown. How did they do it? They're not saying. But reviews from buzz-hunting coffee connoisseurs seem highly positive, and there's a "110% money back guarantee," so if you can't afford daily adrenaline shots through your sternum, you might as well try brewing up a batch of this stuff.