Excavations in the Fergana Valley have brought to light a unique set of zinc-lined ceramic grain-sieves used during the early Iron Age. These sieves were found in the remains of a grand communal hall alongside massive quantities of dried plum pits and charred barley. The specific lining of the sieves suggests they were used for a ritualized separation of seeds during the 'Festival of the Celestial Plum,' a precursor to later Central Asian harvest traditions.
The Central Asian Archaeological Survey notes that the plum held deep symbolic significance as the first fruit of the high valleys, and its processing was a sacred act performed by community leaders. The archaeological findings reveal that the sieves were decorated with celestial patterns, including star charts that aligned with the night sky during the fruit’s ripening period. This discovery underscores the importance of fruit-based ritual cycles in the development of early Silk Road societies and their seasonal festive calendars.