Open source Coca Cola?

Or Pepsi, or something very much like it, used to promote the concept of open source software:

If you’ve been to a computer show in recent months you might have seen it: a shiny silver drink can with a ring-pull logo and the words “opencola” on the side. Inside is a fizzy drink that tastes very much like Coca-Cola. Or is it Pepsi?There’s something else written on the can, though, which sets the drink apart. It says “check out the source at opencola.com.” Go to that Web address and you’ll see something that’s not available on Coca-Cola’s website, or Pepsi’s — the recipe for cola. For the first time ever, you can make the real thing in your own home.

OpenCola is a brand of cola unique in that the instructions for making it are freely available and modifiable. Anybody can make the drink, and anyone can modify and improve on the recipe as long as they, too, license their recipe under the GNU General Public License.

The company who devised this promotion has long since exited the scene, but the opencola recipe lives on... (Via Digg.)