A look at the introduction of coffee into Arabic society.
Reviews what history is known of how it arrived, and then into the first controversy over whether it was permissible. The claims made that it induced drunkenness. The medical views on it.
And perhaps more important, the social context. It caused coffee houses -- reputable alternative to taverns -- to spring up. Well, semi-reputable. One of coffee's big problems was its association with the activities that went on in coffee-houses. from the disreputable to the criminal. The effect on hospitality, since you could do it outside the home, and far more cheaply.
A lot of interesting stuff.