... and Cocoa. Though the flavors of tea, coffee, and cocoa are so different, they all depend for their effect upon a spicy-tasting substance, called caffein from its having been first separated out of coffee. The caffein of tea is sometimes called thein, and that of cocoa theobromin; but they are all practically the same substance. Part of the taste of these beverages is due to the caffein, ... — A Handbook of Health • Woods Hutchinson Read full book for free!