The Essential Oil of the Rosemary Herb is steam distilled from the flowers, stems and leaves of the plant. According to the the British Pharmacopoeia, the oil distilled from the flowering tops is superior to that obtained from the stem and leaves, which is where nearly all commercial oil are said to be distilled. The smell of rosemary essential oil is woody and herbal and is used in aromatherapy to refresh and stimulate the mind. Rosemary was well known and used in the ancient world. It was believed to improve memory, so it became a symbol of fidelity and was used in weddings, funerals and other religious ceremonies. A sprig of rosemary was tied beautifully with ribbons and handed to wedding guests as a symbol of love and loyalty. \'Hungary water,\' made of fresh rosemary tops soaked in wine for a few days was made for the Queen of Hungary and is said to have cured her of paralysis.