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Free yourself from the tyranny of corporate soda! Do it yourself with the open-source OpenCola.
And, uh, just in case you think OpenCola might be more... virtuous than your standard corporate soda, don't be fooled.
When you make cola, you basically end up filling a glass with sugar and then adding just enough water and ancillary ingredients to get it to dissolve.
-Cory Doctorow, on OpenCola

OpenCola
Flavoring
- 3.50 ml orange oil
- 1.00 ml lemon oil
- 1.00 ml nutmeg oil
- 1.25 ml cassia oil
- 0.25 ml coriander oil
- 0.25 ml neroli oil
- 2.75 ml lime oil
- 0.25 ml lavender oil
- 10.0 g gum arabic
- 3.00 ml water
Concentrate
- 2.00 tsp (10 ml) flavoring
- 3.50 tsp (17.5 ml) 75% phosphoric acid or citric acid
- 2.28 l water
- 2.36 kg granulated white sugar
- 0.50 tsp (2.5 ml) caffeine (optional. use caution)
- 30.0 ml caramel color