They have a good reason not to tell the public of the process. It's their brand, their product differentiation. It's what makes Coke as the Coke we know. How would you feel if you made a product, only to hve it copied by another company when you released the process of making it? And what if this copying company got more fame than you (as the original maker) did? What if that company got the first patent for it?... so on and so forth...
It's also to protect their business, you know. And if there's some lumbo jumbo happening with Coke, you can be assured that we're not getting poisoned by it.
