Vermouth is a fortified wine that is often enjoyed as an aperitif in Plaza de España, Barcelona. It is made by infusing a base wine with a blend of botanicals, such as herbs, spices, and roots. Vermouth can be enjoyed on its own, over ice, or as part of a cocktail, such as a Negroni or Martini. It has a complex and aromatic flavor profile, with notes of bitterness and sweetness.