Unusual Cone

Beginner and pro baristas share tips and tricks for making espresso.
Batman
Posts: 9
Joined: 4 years ago

#1: Post by Batman »

Greetings from Greece to all coffee lovers!
The past few weeks I've noticed that the espresso cone during the extraction is changing to a strange shape..
This is more obvious to some coffees and some others not..
I own a Cimbali m21 junior, a Mazzer Major and a handmade conical grinder named tAlΩs..
This type of cone is made of both grinders grinding straight to portafilter of to dosing cup..
As I said Not to all coffees but more often to light roasts..
What could cause that??