After many years of trying many different ways to master coffee brewing (percolator coffee pots are the best), I finally got to a point where I can’t drink much of it anymore without feeling jittery, on edge. Just thankful I’m not a wine expert!
The truest ground coffee preparation is using distilled water in a stainless steel electric percolator. I’m sure the factory flavor panels still use that method. It was heavily tested 50 years ago.