Presentation of the book “Profumi ed essenze alla corte dei califfi” (Dario Flaccovio Editore) by Caterina Greppi: a precious treasure chest containing the first Italian translation of the medieval Arabic treatise Summary on Aromas, the practical formulary for composing perfumes so far attributed to the Egyptian physician Ibn Kaysān. In these pages the author aims to give a small insight into the importance and knowledge of the art of perfumery in the medieval Arab world. With the participation of historian Franco Cardini and the nose Antonio Alessandria.