What does a coffee's "acidity" refer to?

A coffee's "acidity" refers to the brightness and liveliness of its flavor. In the context of coffee, acidity doesn't mean a sour or unpleasant taste; rather, it describes a positive and vibrant characteristic of the coffee experience. When coffee is described as having good acidity, it means that it has a refreshing quality that can enhance the overall flavor profile, making it more complex and enjoyable.

In high-quality coffee, acidity can provide a sense of balance and can complement other flavor notes, such as sweetness or bitterness. It adds to the dynamic and intricate nature of the tasting experience. Therefore, appreciating the acidity in coffee involves recognizing how it contributes to the overall perception of flavor, rather than associating it with a simplistic notion of sourness.