Around 600 AD in the Sassanid Empire, located in modern-day Iran, Persian artisans refined Indian sugar-processing techniques to produce high-quality crystallized sugar on an industrial scale for the era. Sugar plantations and refining facilities were established in Khuzestan and along the Tigris River, using advanced irrigation and boiling methods to create white crystalline sugar. This Persian innovation transformed sugar from a rare medicinal powder into a widely traded luxury commodity that would eventually reach Europe through Arab conquests and trade networks.

The Persian poetic tradition, which would flourish in the works of Rumi, Hafez, and Saadi in subsequent centuries, developed an extensive vocabulary of sugar and sweetness as metaphors for love, spiritual ecstasy, and eloquent speech. The physical availability of crystallized sugar in Persian culture directly shaped this metaphorical system, creating literary conventions that persist in Persian, Urdu, and Ottoman Turkish poetry to the present day.