After the banquet ended, Su You took Xiao Jiu to stroll around the West Market. After some investigation, he learned that as early as the Later Han Dynasty, the clever people of Lingnan had already mastered the technology of making sugar from sugarcane and named it "rock honey". However, even now, "rock honey" is still a rare commodity. It is unknown whether it is because the profit is too low or the cost is too high. In any case, most of the rock honey production in the Sui Dynasty is done by family workshops, and the output is even less than that of glass.
Sugar cane is still a luxury item today, mostly imported from India in the Western Regions via the Silk Road. This stuff called "Bantang" is even ten times more expensive than honey. But in the eyes of the time traveler Su You, this y
