Improve your Brew — Learn

Considering water makes up 98% of your coffee,  the chemistry of the water you brew with will influence the flavor of your cup Immensely.  Coffee professionals use water standards when cupping coffees so results can be compared between different labs.  

While just having a cup at home does not seen like it should require so much effort,  having pure water with the right balance of minerals and PH does make for better tasting/more enjoyable coffee that anyone can taste the difference in.   This is a deep and complicated subject,  if you really want to geek out James Hoffmann one of my favorite coffee...