I mentioned in the C40 thread I’d been trying some lighter roasts (having mainly preferred darker) which I’ve been really enjoying.
One thing I’ve noticed is that the flow rate is wildly different on lighter roasts. On med-dark roasts I get a pretty consistent flow across the extraction, ramping up slowly start to finish.
On light roasts I’m getting nothing for the first few seconds, a few drips and then a pretty steep ramp up to finish. Almost like the puck fractured but it hasn’t, and it seems to happen regardless of prep.
The cup tastes great, and I know that’s really the only thing that matters but I’m curious to know if anyone else experiences this and what it is that causes flow to behave differently on lighter roasts.