My daily dose is 3-4 cups. Making it in Cezve whole my life.
Water does matter, type of heat producer you use to boil does matter too.
Continuing to boil coffee after it already boiled with a small pause doesn't really change anything.
I can distinguish coffee from different continents, but can't say from what particular county it came.
My favorite is St Helena and El Salvador. Sometimes I mix it with Robusta to make it stronger, 1/4 would do the trick.
Have tried French press, syphon and that alternative shit, but I think it's only good for impressing females in the morning.
Real men should drink it dark and not sweet, to embrace the darkness and misery of the life itself.