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.
Mugen: 1:18 usually, V60: 1:16ish. (Light and medium roasts)
Ratio will depend on preference, equipment, and what coffee you’re brewing, as well as the recipe. In my case I use a bit longer ratio on the Mugen compared to the V60 because it has less bypass (less water gets around the coffee by going through the filter too soon). Generally speaking folks use shorter ratios for darker roasts and longer ratios for lighter roasts.
It gets a little more complicated with iced coffee, because what you’re doing with iced coffee is actually brewing a very short ratio and then diluting it, which gives you a concentration that is similar to what you would normally get, but with lower extraction. (Not necessarily a bad thing!)
I didn’t know about the Mugen until I read this comment! Fascinated that new pour over designs keep coming out.
Yes, Mugen is fantastic brewer. It’s a “low by-pass” type, producing smooth brew. And the pour can be continuous. Here’s a picture of it.