The formula for Coca-Cola is one of the most jealously guarded trade secrets in the world. Locked in a vault in Atlanta. Supposedly unreplicable. But we think we may have found the original recipe. And to see if the formula actually might be Coke, we made a batch. Or, anyway, we asked the folks at Jones Soda and Sovereign Flavors to whip up some up, to see if it tastes like Coke.