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Æ 4.00 What’s in Chapter 4?

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  • We discuss how both grind size and packing characteristic determine the permeability of a coffee bed.
  • We explain the concept of jamming and how it determines the degree to which we can compress the puck when we tamp.
  • We explore what factors contribute to the onset of jamming and how grinder design might influence compaction.
  • We look at ways to overcome jamming, to allow tighter packing in the coffee bed.
Back to: Advanced Espresso > Æ Compaction and Permeability

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