Rosemary has many well known health benefits but scientists are now studying its specific effects with regard to memory with outstanding results.
Rosemary is a wonderful herb with a tradition of use spanning millennia. It has innumerable uses in both the kitchen and in herbal medicine.
Did you know that rosemary has been associated with memory enhancement since ancient times? It is true – and it has even been referred to from the latter part of the Elizabethan Era to the Early Romantic period as the herb of remembrance. In Shakespeare’s Hamlet, Ophelia says, “There’s rosemary, that’s for remembrance.” (Hamlet, iv. 5.) It has also long been used as a symbol for remembrance during weddings, war commemorations and funerals in Europe and Australia.  Mourners in old times would wear it as a buttonhole, burn it as incense or throw it into graves as a symbol of remembrance for the dead.
It seems that this tradition of Rosemary may actually far more ancient and have its origins in the Arabic world of medieval times, which was greatly advanced in science: In Henry Lyte’s 1578 “Niewe Herball“, an English version of Rembert Dodoens’ French treatise, it is written
“The Arrabians and their successors Physitions, do say that Rosemarie comforteth the brayne, the memory and the inward senses, and that it restoreth speech, especially the conserve made of the flowers, thereof with Sugar, to be received daily.”
For the rest of the story: http://themindunleashed.org/2014/07/scientists-find-sniffing-rosemary-can-increase-memory-75.html