What is the primary flavor characteristic of coffee liqueurs like Kahlua?

The primary flavor characteristic of coffee liqueurs like Kahlua is robust coffee. This selection highlights the essential taste profile of these liqueurs, which are crafted using either brewed coffee or coffee extract, lending a strong and distinctive coffee flavor. This characteristic is what primarily sets coffee liqueurs apart from other types of liqueurs, allowing them to contribute unique notes and depth to cocktails. The presence of coffee creates a rich, aromatic quality that is enjoyable on its own or as an ingredient in various mixed drinks.

While sweet and bitter flavors can also play a role in the overall profile of coffee liqueurs due to the sugar content and potential bitterness from the coffee, it is the robust coffee flavor that anchors the experience and defines the essence of these liqueurs. Thus, robust coffee is the most accurate descriptor of their primary characteristic.