Brewing Fines – Fine Grain
Fines – Fine grain. Fine particles are the smallest particles produced when coffee is ground; they are described as beans with a diameter of fewer than 100 micrometers. Acceptable also refers to any grain smaller than the bulk of milled grains or consists solely of cell fragments.
On the other hand, the fine grain is vital to the espresso extraction process by any definition. Espresso extraction is dependent on surface erosion from the beans (M Petracco, 2005); hence a sizeable fine-grain …