Images from Academic Texts and research of coffee development and defective coffee beans.
These images are from several sources as I recall, from the Illy A small coffee beverage, about 20 ml, prepared on an espresso machine where pressurized hot water extracted through compressed coffee.: In its most stripped-down, basic form, this is a working definition for espresso: A small book first edition and the compilation of technical papers by Jean Wintgens. I don’t have the original material in front of me so I am a bit unsure.
Yet these are valuable illustrations of the coffee plant, flower and fruit in growth stages. and some very cool micron electroscopy below of healthy versus unhealthy Green coffee refers to the processed seed of the coffee tree fruit. Coffee is a flowering shrub that produces fruit. The seeds of the fruit are processed, roasted, ground and prepared as an infusion.: Coffee beans! The coffee seed structure at that level of magnification is fascinating! -T