Which of the following is one of the six main aromatic categories associated with coffee aroma?

The correct answer is earthy. In the context of coffee aromas, one of the six main aromatic categories is indeed earthy. This category reflects aromas that can come from the soil or the growing conditions of the coffee beans, contributing to the complexity of flavor profiles often found in certain coffee varieties. Earthy aromas might evoke a sense of dampness or richness reminiscent of the ground itself.

The other options, although they represent valid aromas often associated with coffee, do not belong to the primary six categories recognized in the sensory evaluation of coffee. Floral aromas typically suggest a freshness and lightness, while citrus notes bring a bright, zesty quality to a coffee's profile. Savory aromas, while they can describe certain flavor characteristics, are not defined as one of the principal categories. Understanding these categories is crucial in coffee tasting and evaluation, allowing for a more nuanced appreciation of the different flavor attributes present in a cup of coffee.