Vermouth is a popular fortified wine that is enjoyed as an aperitif in Tarragona. It is made by infusing wine with a variety of botanicals, herbs, and spices, resulting in a complex and aromatic drink. Vermouth is often served over ice and garnished with a slice of orange or a sprig of fresh herbs. It is a refreshing and flavorful beverage to sip on while enjoying the vibrant atmosphere of Tarragona.