Happy Labor Day, everyone! While today historically signals the end of summer, the chance of the sun's retreating from its oft-brutal assault on South Florida is nil. So may as well bunker down and prepare with creamy, cold treats -- preferably, this milk shake. Its benefits over an ordinary milk shake are many: It's rich and chocolaty but not overly so. It's silky and smooth but not so thick that it's impossible to drink with a straw. Best of all, it's easy. Just follow the simple pictorial instructions and you'll be well on your way to cooling off over the long, hot... fall.