Why is soda fizzier than sparkling water?

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I recently got one of those at-home drink carbonators (think Sodastream), and in making myself some legally distinct cola, I noticed that sparkling water doesn’t tend to get a ‘head’, but it will after I’ve added the flavoring. (I hope ‘head’ is the right term, like it is with beer.)

What causes this? Is it that adding the flavor gives more ‘surface’ for more fizz to be made, hence more bubbles, or the consistency of soda vs sparkling water making it easy to bubble, or something else?

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Anonymous 0 Comments

What I find interesting is that we had a SodaStream when I was a kid and you had to put the flavour in the bottle and cap it really quickly or it would fizz all over the bench. But now it just doesn’t do that at all, it does fizz up when I pour the mixed drink into a glass though.

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