I learned that water is an important factor for taste because of pizza and bagels. It's a big deal where I grew up.
This article IS very peculiar. There is some decent info in there but the author becomes more unhinged over the course of the article. I got a kick out of imagining that this is what happens to someone that understands finance, but loses their money on shitcoins. Foaming at the mouth, screaming beta and cuck.
I'm going to check out chanchamayo. I love a good coffee/espresso as well. I don't drink as much coffee as I used to but that has only made me care more about the quality.