The relationship between coffee acid value and coffee roasting what does SCAA Agtron number mean

The simplest way is to distinguish by the appearance of coffee beans. From shallow to deep, the color of coffee beans will change from light brown to dark brown. As the roasting degree becomes deeper, the aroma will change from elegant and unrestrained flowers and fruits to strong creamy cocoa aromas. On the other hand, businesses need to use a more scientific method to judge the roasting degree, which is accurately regulated by the American Fine Coffee Association (SCAA).