Philippe Sylvestre Dufour (1622–87)[22], a French coffee merchant, philosopher, and writer, in an accurate and finished treatise on coffee, tells us (see the early edition of the work translated from the Latin) that the first writer to mention the properties of the coffee bean under the name of bunchum was this same Rhazes, "in the ninth century after the birth of our Saviour"; from which (if true) it would appear that coffee has been known for upwards of 1000 years. Robinson[23], however, is of the opinion that bunchum meant something else and had nothing to do with coffee. Dufour, himself, in a later edition of his Traitez Nouveaux et Curieux du Café (the Hague, 1693) is inclined to admit that bunchum may have been a root and not coffee, after all; however, he is careful to add that there is no doubt that the Arabs knew coffee as far back as the year 800. Other, more modern authorities, place it as early as the sixth century.
Wiji Kawih is mentioned in a Kavi (Javan) inscription A.D. 856; and it is thought that the "bean broth" in David Tapperi's list of Javanese beverages (1667–82) may have been coffee[24].
While the true origin of coffee drinking may be forever hidden among the mysteries of the purple East, shrouded as it is in legend and fable, scholars have marshaled sufficient facts to prove that the beverage was known in Ethiopia "from time immemorial," and there is much to add verisimilitude to Dufour's narrative. This first coffee merchant-prince, skilled in languages and polite learning, considered that his character as a merchant was not inconsistent with that of an author; and he even went so far as to say there were some things (for instance, coffee) on which a merchant could be better informed than a philosopher.
Granting that by bunchum Rhazes meant coffee, the plant and the drink must have been known to his immediate followers; and this, indeed, seems to be indicated by similar references in the writings of Avicenna (Ibn Sina), the Mohammedan physician and philosopher, who lived from 980 to 1037 A.D.
Rhazes, in the quaint language of Dufour, assures us that "bunchum (coffee) is hot and dry and very good for the stomach." Avicenna explains the medicinal properties and uses of the coffee bean (bon or bunn), which he, also, calls bunchum, after this fashion:
As to the choice thereof, that of a lemon color, light, and of a good smell, is the best; the white and the heavy is naught. It is hot and dry in the first degree, and, according to others, cold in the first degree. It fortifies the members, it cleans the skin, and dries up the humidities that are under it, and gives an excellent smell to all the body.
The early Arabians called the bean and the tree that bore it, bunn; the drink, bunchum. A. Galland[25] (1646–1715), the French Orientalist who first analyzed and translated from the Arabic the Abd-al-Kâdir manuscript[26], the oldest document extant telling of the origin of coffee, observes that Avicenna speaks of the bunn, or coffee; as do also Prospero Alpini and Veslingius (Vesling). Bengiazlah, another great physician, contemporary with Avicenna, likewise mentions coffee; by which, says Galland, one may see that we are indebted to physicians for the discovery of coffee, as well as of sugar, tea, and chocolate.
Rauwolf[27] (d. 1596), German physician and botanist, and the first European to mention coffee, who became acquainted with the beverage in Aleppo in 1573, telling how the drink was prepared by the Turks, says:
In this same water they take a fruit called Bunnu, which in its bigness, shape, and color is almost like unto a bayberry, with two thin shells surrounded, which, as they informed me, are brought from the Indies; but as these in themselves are, and have within them, two yellowish grains in two distinct cells, and besides, being they agree in their virtue, figure, looks, and name with the Bunchum of Avicenna and Bunco, of Rasis ad Almans exactly: therefore I take them to be the same.