Types of Coffee Roasts

As coffee beans roast, several important chemical changes occur that affect the taste of the bean. Perhaps the most notable change is that the beans darken in color the longer they’re roasted. It is by this most obvious change that we classify each roast type. Let’s take a look at them in turn, considering the distinguishing features of each roast. Notice that the acidity level of the bean goes down during the roasting process, while the bitterness increases.