The historical record
A New Year wish
For some Iranian New Year tables, noodles carry a wish as well as a flavor. Shireen Mahdavi's account of Qajar cuisine in Encyclopaedia Iranica records reshteh polo on the first day of Farvardin, linked to the hope of keeping the course of one's affairs in hand. The word reshteh can mean a noodle or a thread; the custom plays on that shared meaning.
Origins & development
Kashan's seasonal table
A separate Iranica study of the Esbandi festival in the Kashan region describes noodle rice among its customary pilafs. That is evidence of a regional celebration, not a claim that Kashan invented the dish. Together, these accounts place reshteh polo in a wider history of Iranian seasonal meals, while present-day cooks show how it also belongs to ordinary home cooking.
At the Persian table
Beyond the holiday
Reshteh polo is not only a New Year dish. Iranian cook Rozina describes serving it in winter and during Ramadan, with fruit or meat accompaniments. Families may favor dates, raisins, both, or neither; this recipe chooses a modest amount of both, without claiming one household version is the only authentic one.