Bezzera Unica and Baratza Sette 30 - cannot dial in a good shot - Page 2

Beginner and pro baristas share tips and tricks for making espresso.
boren

#11: Post by boren »

Since you manage to get the ratio and timing you want (without channeling?) but end up with sour coffee I doubt the issue is the grinder. I suggest you try the following:

1. Longer warm up.
2. Higher boiler temperature.
3. Darker beans.