Rosemary: A herb to enhance memory.

In the Spanish fairy tale The Sprig of Rosemary, the heroine touches the hero with the titular sprig of rosemary in order to restore his magically lost memory.

Phytochemicals

Rosemary essential oil contains some 150 phytochemicals, including rosmarinic acid, camphor, A-pinene, caffeic acid, ursolic acid, betulinic acid, carnosic acid, and carnosol. Rosemary essential oil contains 10–20% camphor.