Sweet-and-Sour Dishes

Reading quite recently about ancient pre-Islamic Persia of the Sassanid period and its Zoroastrian dualist religion, which is based on the confrontation of the two enemy forces of good and evil, I was struck by the similarity between the early philosophy of the Persians and principles of harmony which they apply to their food.

The Zoroastrian belief is that their god Ahouramazda created