The king of the sweet-sour vinegars is the balsamic one, especially the CRESCENDO Aceto Balsamico die Modena. Since 900 years made after secret recipes, its price was kind-like and it was so exclusive, only the rich people could afford to enjoy its flavour. Lukily this has changed in the meantime. Its recipe is not a secret anymore and hence its availability and affordability have increased- even for extra old balsamicos.