agridulce sherry vinegar is a spanish sherry vinegar that has both a sweet and sour taste. it is produced in the sherry region of andalusia, spain, from dry white wines and undergoes a process of fermentation and ageing in oak barrels. agridulce sherry vinegar has an amber colour and a complex flavour, with notes of walnut and caramel, as well as a hint of acidity. it is often used in fish and meat dishes, as well as in sauces and dressings, to add flavour and acidity.