I always thought this was baloney but James Hoffman’s recent video where he steamed water with the steam wand instead of boiling it normally for an americano changed my mind. I tried it and it was a genuinely different tasting drink. Not sure what causes it but different dissolved gases seems plausible.
That will drive off the other dissolved gasses, and at least according to some, will make the water taste stale.
Coffee heads have told me to use freshly heated and not reboiled water for that reason.
I always thought this was baloney but James Hoffman’s recent video where he steamed water with the steam wand instead of boiling it normally for an americano changed my mind. I tried it and it was a genuinely different tasting drink. Not sure what causes it but different dissolved gases seems plausible.