There’s a lot that I will remember about Meatopia, presented by Whole Foods Market, on a stormy Saturday in 2012. There was the sun, followed by a tornado threat, followed by a glancing rainstorm that barely dampened the spirits of the assembled crowd; a brief sunburst afterward, and a second wind for sated appetites; and then, darkness and rain.   But some of my most vivid memories were of MCing the Best Butcher Contest. The three Whole Foods butcher up there on the stage were working so hard, with such intent concentration, that it was as if they didn’t even feel the looming clouds and accelerating winds. Their forearms flexed and knotted and sweat rolled down their faces as they first attempted to…