The French Dude wrote:But I have to admit I can't get a Rao style profile when darker roast. I go 30 or even 35% dev.
Do I do something wrong?
Short answer: If you want to go beyond 25%, then you're not anymore in the "Rao style"
The long answer can be really really long, but in summary (and then here this is my opinion), when you get to that region, 30% and beyond, you are already burning the coffee and the darker you go, everything will just taste the same (burnt), not really mattering how you got there.