What distinguishes Spanish style vermouth?

Spanish style vermouth is characterized by the inclusion of unique ingredients such as chamomile, ginger, and lemon verbena, which contribute to its distinct flavor profile. These botanicals are often utilized to create a more aromatic and uniquely complex taste compared to other styles of vermouth. The choice of these specific herbs and spices reflects the regional palate and traditional practices in Spain, making option B accurate in highlighting these distinguishing features.

Additionally, the use of a higher proportion of aromatic herbs, while true for some styles, does not specifically denote what makes Spanish vermouth unique among vermouth varieties. The assertion that it is always dry compared to Italian styles is misleading, as Spanish vermouths can be both dry and sweet. Lastly, while many vermouths, including some Spanish varieties, are produced with a base of white wine, this characteristic does not set Spanish vermouth apart since it is a common practice across various types. Thus, option B captures the essence of what truly distinguishes Spanish style vermouth.