Types Of Coffee Grind Sizes & Chart | KitchenSanity
The question of how fine to grind coffee really is determined by your brewing method. Quality coffee beans will often have a sheen to them; as you grind your coffee, that sheen will disappear because the particles are too small to reflect.
Fine grind / small dose versus coarse grind / big dose: …
I've had a bit of serendipity -- the collision of study on espresso extraction and a very unusual espresso blend. This has got me speculating and I have a favor to ask: If you're inclined, and have the chance, do several shots of the same blend.