There is Death in the Pot
Kings, Chapt VI, v. 40
"A Treatise on Adulterations of Food, and Culinary Poisons, Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and other Articles Employed in Domestic Economy, and Methods of Detecting Them." London; Longman, Hurst, Rees, Orme, and Brown: 1820, 2nd edition.
Frederick Christian Accum (1769-1838), the author of this work, was a man with a curiosity for many things. This pioneering treatise on the subject of dangerous foods pointed out lead in wine, alum in bread, counterfeit coffee, carbonated of copper in tea, "lengtheners" in brandy, all sorts of strange things in the beer.
Although other chemists and doctors were also trying to alert the public to the problem of food adulteration at this time, Accum's informal, some would say sensationalistic, style made his book the principal "shout in the darkness" in the early 19th century. The other thing people found fascinating about Accum's book was that he actually named the names of adulterating merchants and importers, taken directly from court records.
This did not make him universally popular-- in the preface to this edition he notes "To those who have chosen anonymously to transmit to me their opinion concerning this book, together with their maledictions, I have little to say; but they may rest assured, that their menaces will in no way prevent me from endeavoring to put the unwary on their guard against the frauds of dishonest men..." and he goes on to promise that he will continue to name names. For reasons that remain somewhat obscure but most certainly had much to do with the ill-will his revelations caused, within a few years he was forced to leave England and return to his native Germany.
Although faded and repaired, the binding of this book is interesting ---the boards contain, on a light green background contrasting white designs of snakes twirling in and out around a rectangle enclosing a spider's web, with a large spider grabbing a fly. At the top is a banner with a skull and crossbones, and underneath it is the legend "There is Death in the Pot". A contemporary review of this work commented on the forceful binding as follows, "even the outside of his book shall awaken our fears."