Often times, acidity is a word that can be associated with something negative. However, in the coffee world, acidity is a highly desirable characteristic of coffee. Three different acids typically represent the acidity in coffee: formic acid, malic acid, and acetic acid. These acids can also similarly be found in vinegar, fruit, and wine among others.
The reason acidity is highly sought after in coffee is it provides the “snap” and liveliness that’s enjoyed in coffee. A good acidity in a coffee comes from good roasting. Low acidity coffees are typically available for those who medically cannot consume foods high in acid, or who prefer a lower acidity coffee. Dark roasts, such as French Roast, offer a lower acidity.