What is the most commonly used coffee strength scale and how does it help in determining the intensity of coffee flavors?

The most commonly used coffee strength scale is the Specialty Coffee Association's (SCA) Coffee Taster's Flavor Wheel. This scale helps in determining the intensity of coffee flavors by categorizing them into different levels of strength, such as light, medium, and dark roast. By using this scale, coffee drinkers can better understand and communicate the intensity of flavors in their coffee.