Jalebi's fermented-batter method is thought to have traveled to India over a thousand years ago along Persian trade routes as "zoolbia," making it one of the subcontinent's oldest continuously made street sweets.
A fermented batter is piped into hot oil in tight spiral loops, deep-fried until crisp, then plunged straight into warm, cardamom-scented sugar syrup to soak. Vendors fry it fresh in a wide karahi at dawn and evening, serving it hot with a side of milk or rabri.