A terrific sensation of sweet and sour. This combination has been in the collective psyche for hundreds if not thousands of years and not just in confectionery. The chinese understood this idea in their food at leat three millenia ago and exported it all over the world. Arab cookery celebrates it by combining sweet fruit and savoury meats we do it by using sweet pickles with contrasting foods. Well here's how it's done with sweets, Acid Drops. Buy some today!