- Posts: 25
Frans Goddijn wrote: Some roasters who want to jump on train of the fasionable demand for 'light roast' terminate the roast earlier which does give one a lighter roast but also a less developed bean which is harder to extract on the more of less 'classic' machines.
I'd suggest to try different roasters' 'light' beans and if you find one you really like, stay with that for a while.
Otherwise, keep enjoying the more classic roasts which saves you money on wasted beans, saves you time in experimentation and possible a little frustration.
The current L-R with the digital unit makes it very very easy to tame the light roasts as the grinds will be hit with enough heat & pressure to compensate for what they missed in the roaster ;-)
Trevor Watters wrote: Hi Geoff,
I would increase the dosage a bit and continue to tamp seeing how the increased dosage affects the flow rate. I assume that you are using the 18gm basket so it can hold a little more before it touches the screen.
Longer pre-infusion does not necessarily mean bitter and acidic. Sometimes higher dosage and heavier tamp on a slightly courser grind will also result in a better extraction.
Jonathan Lambin wrote: When pulling light roasts with my L1, I typically start with a higher dose (19g) and a much finer grind. I distribute with the Londinium tool as always, then prep and tamp.
I rarely go above 10 seconds of pre-infusion at boiler pressure. What gives me good results is an active pre-infusion by holding the lever at the point where the lever catches. You can then play with that active PI time or weight the amount of coffee extraxted in that phase.
The end of the pull is sometimes fast so I make sure to remove the cup at first blonding signs or anything suggesting puck fracture.
I usually dump a little more grinds than usual since I don't single dose with my Fiorenzato F64E.
What grinder aren you using?
There's a thread on HB about pressure profiling techniques for spring lever machines that is quite a useful guide I find.
Of course, owning a LR with the PI module and a 83mm flat single dosing grinder is an ideal solution to tame those super light finicky roasts without working out only your right arm with that silly active PI.... but I do appreciate the simplicity of my L1. Very much actually. I guess I'll just have to start pulling with my left hand more often... ;)