Remember the story of The Little Yerba Mate Company That Could? Me neither. But one of the more prominent yerba mate purveyors - Guayaki - turned up not so long ago as the subject of a lengthy article in a recent issue of Newsweek. As the teaser blurb puts it, "Taking on Coke is no easy task. But the founders of a relatively small tea company think they've got a formula for success. All they need is a little help."