I have a LaNuovo era Cuadra e-61 espresso machine and a Macap M5 grinder.
Ill tell you what I have done and how I do it first.
I have had the machine for 2 years and used to always pull a +-25s shot through the single basket.
I used to level with the basket and tamp 40pound.
I came upon this site and saw the naked portafilter for the first time.
I ordered one and at the same time got:
New convex tamper
Digital +-0.1g scale
I made a complete cleaning backflushing the head with cafiza.
Cleaned it shiny everywhere under the screen.
I put in a new screen and basket and use the new famea naked portafilter.
I have used the black hand beans about 8 days.
Yesterday I got some 3 days beans from a local (Red goat coffee)
I grind them so when I pinch the coffee they stay pinched but with
some cracks happening.
Now I have tried in the 14g basket:
The grounds do not touch the showerhead.
I flush over the portafilter until the hissing stop, and the filter gets hot.
I put the handle into the machine as I dose the basket.
I do not flush the basket it stays dry.
I pull the shot at about 22-25seconds, I get lovely tigerstriping, it doesnt blond
to early, and the result in the cup looks beautiful.
I have tigerstriping in the cup, just about perfect.
BUT....gah, it is spritzing like there is no tomorrow!!!!!
No matter what I do:
low dose - high dose
hard tamp - tamper weight tamp
stockfleth move.....taping the basket, not tapping the basket
circular light tamp and then hard tamp
It doesnt seem to matter what I do, it is always channeling. Always.
I do sometimes have less (just one tine squirt) and sometimes
it sprays all around.
This does not happen according to me changing my ways.
Im thinking yay no channeling - I do the same and its spraying like there is no tomorrow.
As I said, the cup looks glorious, apart from very much dots all around the edge that
I have to wipe clean. The taste is from very good to not so good.
Im thinking I have more often bitterness in the taste.
I would think the shots should taste watery with the channeling going on
but they do the opposite - they taste strong.
Channeling - its spraying alot. (I sometimes get some small grinds in the coffe but not much)
Taste: often towards the bitter, and to my surprise also
too full bodied - doesnt really change from 14g to 16g they can both
be about right or too full bodied with to much bitter.
So now, what should I try and do?
Im thinking grinding coarser because it feels like the puck is too hard
and the water is fighting and finds the easiest way through the puck
to land on my hand
But if I level the basket with the grind Im having I get the right timing
so wouldnt that make it run to fast?
Im really stuck here, is there something I could try that is the most
likely variable and then try all aspects of that (like different dosages)
What is my list of things to try and in what order?
I do know I can get a very nice espresso from this setup without
channeling - it has happened.