I am currently using 40g coffee to 500g water which is 12.5g coffee to 1g water but I have seen things like this https://www.olympiacoffee.com/blogs/blog/how-to-brew-like-olympia-coffee#:~:text=For those of you who,use 16.7 grams of water. which suggest using a little more. Does it even matter to adjust the ratio precisely if I don’t have a precision grinder and am using a Krups blade grinder? I am trying to get things as precise as possible.
I find that a 16:1 or 17:1 ratio delivers the coffee flavor more reliably. But, most morning I forgo this and do a 20:1 or more just so I have more to drink over time. The higher ratios, being weaker, seem to be more forgiving in terms of bitterness (makes sense cause the flavor is more watered down).