Problem Cause
Grind Too Fine
Coffee particles are too small, creating excessive resistance to water flow
How to Identify This Issue
- 1Shot runs very slow or chokes completely
- 2Bitter, harsh taste
- 3Over 40 second extraction
- 4Machine struggles or makes unusual sounds
- 5Puck is wet and muddy
Visual Cues
Ground texture and uniformity
Puck surface and distribution
Related Symptoms
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Solutions for Grind Too Fine
Grind Coarser
Adjust your grinder to produce coarser coffee particles. Make small adjustments (2-3 increments) and pull a test shot.
Expected Result
Extraction time should decrease by 3-5 seconds. Flavor should become less bitter and harsh.
Decrease Coffee Dose
Remove 0.5-1g of coffee from your portafilter basket. Leave adequate headspace below the shower screen.
Expected Result
Less resistance, faster extraction, cleaner flavor profile.
Clean Machine and Grinder
Backflush your machine with cleaner, clean the shower screen, and purge your grinder with cleaning tablets or rice.
Expected Result
Cleaner, purer flavors without rancid oil contamination.