The Travels of Sir John Mandeville

In that land of Job there ne is no default of no thing that is needful to man's body. There be hills, where men get great plenty of manna in greater abundance than in any other country. This manna is clept bread of angels. And it is a white thing that is full sweet and right delicious, and more sweet than honey or sugar. And it cometh of the dew of heaven that falleth upon the herbs in that country. And it congealeth and becometh all white and sweet. And men put it in medicines for rich men to make the womb lax, and to purge evil blood. For it cleanseth the blood and putteth out melancholy. This land of Job marcheth to the kingdom of Chaldea.