From WSJ:
The soda pods will contain two chambers, he said. The first will have a liquid syrup for flavoring; the second will contain a pre-form of carbonation that will be released when the drink-making process starts. In addition to pods for Coke brands, the Keurig will also offer pods for non-carbonated cold teas, juice and sports drinks. The company wouldn't say whether they will contain powder or liquid.
The flash-chilling and pre-measured doses of drink syrup are what differentiates the new Keurig soda maker from SodaStream and are probably why quality-obsessive Coke is willing to take such an unusual step.
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