Antonio Colmenero de Ledesma, Curioso tratado de la naturaleza y calidad del chocolate (Madrid, 1631)

The first printed monograph on chocolate: a quarto by a physician and surgeon of Écija, arguing against a colleague that the American drink was good for you, and printing the compound recipe, four kinds of chile by their Nahuatl names, and the shade-tree method of growing cacao. It also tells a European cook what to use when the American ingredients cannot be had, which is how a Mesoamerican preparation became a European one — over five thousand years after Amerindians first cultivated the tree.