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I have an ISI whipper, and want to carbonate water using this device and CO2 chargers. This should in principle be possible. I have filled the whipper flask up to the maximum and charged it with one charger. My experience with this technique is that there is rather little fizz in the water when I dispense it from the flask.

Am I doing something wrong here?

I use the gourmet whipper plus, ISI Soda charger and cold, ordinary tap water.

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Could you add more details on your technique? How much do you shake? How long do you leave it charged? Do you know the pH of your tap water? –  Peter Taylor Aug 29 '13 at 10:25
How cold is "cold"? The colder it is (but not frozen), the better it will carbonate. –  derobert Aug 29 '13 at 15:07
I did only shake the canister a few times after charging. I left it perhaps for a few minutes. The water came from our fridge dispenser, which should be about typicaly fridge temperature. The pH I do not know, unfortunately. –  torkildl Aug 30 '13 at 21:52

1 Answer 1

When carbonating in the ISI whipper, it is important to start with a cold liquid (or fruit, i.e. carbonated grapes). Charge with one CO2, agitate, then slowly release the pressure so that you remove all air from the charger. Then, charge with one or two (depending on size of ISI) CO2 charges to fully carbonate. If you leave out the first step you are simply compressing trapped air, rather than dissolving CO2 into your product.

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I tried this now a few times, but still I do not get very fizzy water. Should the water be stored in the ISI for a long period before use? –  torkildl Aug 30 '13 at 21:53
No, it should be carbonated once you charge it. Use cold water. You could even add ice. You could try a second charge. Also, be sure to vent the pressure very slowly before you open the isi to use the water. –  moscafj Aug 30 '13 at 23:21

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