The orange blossom is the fragrant flower of the Citrus sinensis. It is used in perfume making and has been written about as an aphrodisiac. Orange blossom essence is an important component in the making of perfume. From Wikipedia
The new Fleur D’Oranger fragrance, created by Jo Malone CBE, offers an affordable alternative to the £118 Jo Malone London Orange Blossom Cologne.