I’ve dialled in some beans from my local roaster that taste great but they’re just slightly bitter
I don’t want to go overboard when decreasing the ratio though and want to know what a good amount is to decrease the ratio by incrementally until I reach the flavour I want
try it. Use big steps so you’ll easily know when you’ve gone too far.
maybe ratio is not the control point you want to change. Maybe aim for a shorter contact time?
I think this is right. For bitterness I would start with decreasing time or temperature as it sounds like you are over-extracting currently.