βαλάνινον ἔλαιον (balaninon elaion) is an oil said to be produced from tree nuts whose precise origin is unclear. The oil and the nuts go by several names in antiquity, while the modern identification remains unclear, although there is some consensus that it refers to a species of Moringa. In antiquity, it is known for its ‘receptivity’ to scent and for its long shelf-life.