I usually keep three types of water: soft water (Japanese mineral water), hard water (Contrex) and Sparkling water (Perrier).
I use different type of water for different purpose.
Soft water for hot drinks such as tea and coffee.
Hard water for simply drinking WATER.
Sparkling water for when I want to drink sparkling by replacing Soda and beer.
The other day, I was out of soft water when I wanted to have a cup of brewed coffee.
I brewed coffee with hard water and it tasted different from soft water: stronger and more bitter.
I used the same coffee powder and now I learned I can enjoy two different taste by using different type of water.
sonokotchi 