Neroli oil is produced by steam-distilling the fragrant flowers of the bitter orange tree (Citrus aurantium), which is cultivated in the Western parts of India, Eastern Africa, and the Himalayas. Neroli oil has a sweet and intensely floral aroma, and can be pale yellow or coffee-brown in color. Neroli oil has a sweet and intensely floral aroma, and can be pale yellow or coffee-brown in color.