Why does the grind matter?

Micah Stoicu(micah-andersen-gmail-com)
posted to: The Grinder
What difference does fine or coarsely ground beans make? Will it really make a difference in a regular drip coffee maker?
  • Eric Andersen replied

    Absolutely - the grind is probably the most important thing in controlling extraction. A finer grind will expose more surface area to the water and result in more extraction from the coffee. A coarser grind will leave more space for the water to pass through quickly, resulting in less contact time and less extraction.