How do noble hops differ from American hops in general flavor profile?

Noble hops are characterized by their earthy, herbal, and floral flavor profiles, which set them apart from many American hop varieties. The traditional noble hops, such as Hallertau, Saaz, and Tettnanger, are typically known for their subtlety and refinement, often contributing to a more balanced and delicate flavor in lagers and traditional ales. Their flavor tends to be more rounded and may include notes of grassiness and spiciness, enhancing the overall complexity of the beer without dominating it.

In contrast, American hops are often noted for their bold and intense flavors and aromas, which frequently include citrus, pine, and tropical fruit notes. This pronounced profile can lead to beers that are much more hop-forward, particularly in styles like IPAs and pale ales. Therefore, the distinguishing characteristic of noble hops being more earthy aligns with their traditional usage in European brewing, where the emphasis is on balance and subtlety rather than the aggressive hop character often associated with American varieties.