Category Archives: Knowledge Transmission

Cipriano Piccolpasso’s Recipe for the Transmutation of Matter

By Steve Wharton

Cipriano Piccolpasso, Tav. 20, illustrations associated with the making of ‘lustres’, I Tre Libri Dell’Arte Del Vasajo… (1556-75), Dallo Stabilimento Tipografico, 1857.

Certain recipes can tell us a great deal about the cultural and sometimes the technological contexts within which they were compiled and disseminated. In his mid-sixteenth century Italian treatise, the Three Books of the Art of the Potter.., Cipriano Piccolpasso (1523-79) discussed and illustrated the technology and the manufacturing processes that were central to the making of tin-glazed earthenware pottery.[1] Frequently described as having been produced between the years 1556 and 1558, though revised throughout his lifetime, and as an instruction manual, the manuscript was unpublished until the mid-nineteenth century.[2] Today, it is considered the authentic voice of the sixteenth-century Italian potter. However, as I have discussed elsewhere, Piccolpasso’s descriptions are based on observation of the techniques and processes employed by the potters of Castel Durante, rather than practice. Nevertheless his treatise is consistently and frequently cited in highly technical physical and chemical analyses of Renaissance glaze and related technology.[3] The recipes discussed include those for colour as well as those for ‘ruby’ and ‘gold’ lustres: that is the addition of pristine metallic surfaces to otherwise finished ware. Piccolpasso says of them: ‘…I do not intend to go on further until I have discoursed to you upon gold maiolica, from what I have heard of it from others, not that I have ever made it or even seen it being done. I do know that it is painted over finished wares…’

While Piccolpasso is passing on hearsay, he nevertheless includes a recipe for what he calls Rosso da Maiolica [red maiolica]:

A            B

Red earth                           oz           3             6

Armenian Bole                 oz           1             0

Ferretto of Spain             oz           2             3

Cinnabar                            oz           0             3

to which he adds: ‘…with this last mixture ‘B’, include a calcined silver carlino [a burnt coin]’. In his marginal notes he confirms that ‘…this last mixture “B” is called golden maiolica’.

The inclusion of particularly cinnabar is at first a mystery; it has no function in a recipe such as this. It is only when we know that cinnabar is a compound of mercury and sulphur and that all the ingredients are ground together in a pot of red [i.e. strong] vinegar, one of the ‘sharp waters’ employed by alchemists, that things begin to make a little more sense. During the period, what were described as the ‘arts of fire’, which included the making of pottery, were also used to make not only high status bronze-cast sculpture and gold-cast jewellery, for example, but also to manufacture and prepare more ubiquitous substances such as pigments and other colouring agents for an array of manufacturing techniques. These included easel and fresco painting, tesserae for mosaics, fabric dyes and the decoration of glass and indeed pottery. As has been observed, alchemy, in terms of practical chemistry, was primarily concerned with the making of industrial products by using chemical processes; it was not necessarily concerned with the occult, the mystical or the spiritual.[4]

What Piccolpasso described was and is still known as a ‘transmutation lustre’ [my emphasis] in which a paste based upon raw clay is applied to the surface of a pot. It is a well-known technique: the fifteenth-century Hispano-Moresque potters used a red ochre clay corresponding exactly to that included in this recipe. A silver salt was added, in the form of a calcined carlino, together with a copper compound, known as Ferretto of Spain, to produce ‘gold’ lustre. No gold was ever used and in that sense it is the perception of gold that becomes significant.

The transmutation of base material into gold, however, was central to one of the alchemists’ most important aims, and mercury, sulphur and ‘sharp water’ were all part of the process. In his discussion of this recipe, Piccolpasso may well have been relying on what he knew of the presence of alchemy in all kinds of chemical and physical practice, including the production of gold maiolica. More specifically, he raises the question: to what extent might the potters of north-central Italy, in employing their own art of fire, be considered alchemists? What is more certain is that the philosophy associated with alchemy provides an insight into the ways in which knowledge and what kinds of knowledge were gathered and transmitted during the period. Ultimately, Piccolpasso’s record of what he understood as the recipe for ‘gold’ lustre reflected the endeavours of contemporary scholars and indeed pottery practitioners to cope with the challenges of defining and connecting all the different kinds and parts of knowledge that were circulating at that time.


[1] Piccolpasso, Cipriano, Li tre libri dell’arte del vasaio nei quai si tratta non solo la pratica, ma brevemente tutti gli secreti di essa cosa che persino al dè d’oggi è stata sempre tenuta ascosta…ecc., National Art Library, Victoria and Albert Museum, South Kensington, London, MSL/1861/7446

[2] Caiani, A., 1857, I Tre Libri dell’Arte del Vasajo, Roma, dallo Stabilimento Tipografico, Via del Corso, num. 387.

[3] See, for example, G. Padeletti, G. M. Ingo et al, ‘First-time Observation of Maestro Giorgio Masterpieces by Means of non-destructive Techniques’, Applied Physics. A, Materials Science & Processing, 0947-8396, Padeletti, 2006, vol. 83 issue, 4, pp. 475-483; B. Brunetti et al., ‘Copper in Glazes of Renaissance Luster Pottery: Nanoparticles, Ions and Local Environment’, Journal of Applied Physics, 93/12, 2003, pp. 10058–63

[4] A. Y. Al-Hassan, Studies in al-Kimya’, 2009, p. 8; see also L. Abraham, A Dictionary of Alchemical Imagery, 1998, p. 11.

Mistletoe: Not just for kissing?

By Jennifer Munroe

As the holiday season draws near, mistletoe might come to mind, since the tradition of kissing under this otherwise culturally-absent plant prevails today. Native to North America, mistletoe grows in the west as well as in areas of the east. The first time I saw mistletoe growing high in the tree canopy as I was driving down the highway here in North Carolina, it seemed somehow out of place, with its wispy tendrils, quite unlike the version I’d seen in stores over the years. In England, mistletoe, or viscum album, grows as a shrub, with its small, yellow flowers and white, sticky berries. It seems that today, the extracts of European mistletoe has been used for seizures, headaches, and even to treat cancer. And to think: I thought it was just for kissing.

Imagine my surprise, then, when I came across the following references to mistletoe from correspondence between Katherine Jones, Lady Ranelagh, and her brother, Robert Boyle. Both letters express Jones’s concern for her sister-in-law, Margaret Boyle, as she suffers from frequent bouts of “scurbitical humour,” or fits related to scurvy.

In the first letter, Jones refers to a quantity of mistletoe that she has found in the recently-deceased Lady Clarendon’s “case”:

“Nature being soe farr weakened as to be unable to worke together wth ye remedys ye Dr had upon consulte agreed to give her. None of all which had so visible an operation as to wakening and rousing her as a large bottle of very quick spirit of Hartshorne that I procured for he held under her nose which ye Dr confesed was as proper as any thing that could be use to her (& which I give you notice of to invite you to put yourselfe into a good stock of it for my Dearest Sisters use which how you may doe, one that I know having lately stilled it in good quantity & selling it for 5s an ounce. Halfe a pinte would be enough for you at once which was about what we now had for this poore Lady … I intend this night if I can get Dr Cox to discourse with him about her, & then send you wt he directs his power he thinks rather better than ye Misselto I found in my Lady Claringdons case that ye Dr [saw her] foaming & puking at ye mouth differing things in these fits he she did ye later at least…” (BL Add 75354, ff. 101-104: Letter from Katherine to Robert 10 Aug, 1667?).

In the second letter, dated a week later, mistletoe is prescribed as a possible remedy for Margaret Boyle’s fits, but an alternative remedy, a “hartshorn spirit” of Jones’s making, figures as again as an arguably superior treatment:

“The misselto may be given about ye changes of ye moone if it could be got in quantities enough to be so employed but because its so great a raretie its seldome given but in a fit or upon discovery of ye approach of one. My Lady Warwicke is not yet come home when she does I shall god wiling make her send you some but my Lord Dretzwel can furnish you for he has one growing. Ye Hartshorne spirit I have spoken for as you [requested] but know not how to send a halfe pint bottle by ye post & therefore shal desire Mr Graham to send it as fast as he can” (BL Add 75354, ff. 107r-110v, dated  17 Aug 1667?).

While there is much that could be said about these letters, what’s curious to me is the way that mistletoe and hartshorn spirits function as competing treatments for scorbitical fits [related to scurvy] (and earlier in the first letter, ironically, the doctor insisted that Margaret Boyle not eat raw fruit when she began to feel unwell). Jones seems not quite to want to contradict the doctor’s prescription of mistletoe, but she certainly suggests her hartshorn might be more effective. In the first letter, that is, she makes it clear that even the doctor “confesed” that her hartshorn spirits, waved under the nose (which she can sell to interested parties for 5s an ounce, by the way…) vivified the ailing Lady Clarendon more effectively than other applications; and it seems the “foaming & puking at ye mouth” that Lady Clarendon experienced may well have stemmed from her use of the mistletoe in her case, as mistletoe ingestion induces vomiting. In both recipes, the references to mistletoe as a treatment are followed almost immediately by those for Jones’s own (and obviously preferred) hartshorn spirits, made from the shavings from a hart’s antlers, which produces ammonium carbonate. And while it seems that such a remedy would likely be an irritant to its user, Jones swears by it. Or at least she swears by her spirit of hartshorn. Maybe it is better, though, to leave the hartshorn on the hart and the mistletoe for kissing and just eat some fruit—or some fruitcake.

Writing Recipes Down

Alisha Rankin, Tufts University

Every time I give an in-class exam, as I did this week, my students complain bitterly about how much their hands ache from all of the writing. In this digital age, they tell me, writing simply is not something they do very often. They’re out of practice. With a keyboard, they could have written twice as much.  It got me thinking about the recipes I work on and the labor involved on behalf of the women who wrote them – although in the case of my ladies, of course, the distinction was between memory and writing rather than writing and typing.

A striking recipe manuscript belonging to the counts of Hohenlohe in southwest Germany illustrates the importance of the act of writing down. Copied into the blank pages at the back of another recipe collection, it begins with the heading, “The old countess of Mansfeld gave these medicines to her son, Count Hans Georg, written in her own hand.” [i]

Scribal Copy of Dorothea of Mansfeld’s Recipe Book, late 16th c.

“The old countess of Mansfeld” referred to Dorothea of Mansfeld (1493-1578), a German noblewoman widely known for her remedies and her charitable healing. Her recipes were prized by aristocrats and commoners alike, and they were even recommended by several physicians. The Hohenlohe recipe book illustrates how much she was respected: so much so that the very fact she had written the book herself was deemed a crucial item of information.  The scribe soon ran out of pages at the back of the volume and had to continue the text in the blank pages between each chapter of the original collection. Every jump in the text reiterated Dorothea of Mansfeld’s act of writing down. The inside back binding explains, “NOTA: In the front of this book, after the twenty-forth folio, continue more medical arts that the old countess of Mansfeld also wrote down for her son, Count Hans Georg, by herself.” [ii]

Note on the back page of recipe book sending the reader to the blank pages in the middle of the volume: each jump in text emphasizes Dorothea’s “own hand.”

If one flips to the designated folio, the recipes indeed continue under the heading “These are more medical arts that the old countess of Mansfeld gave to her son, Count Hans Georg, written by herself.” The reader is led in the same manner through three more breaks in the text, some of them mid-recipe, until it concludes in the (previously blank) pages after folio 65 with the words: “End of the medical arts that the old countess of Mansfeld gave to her son, Count Hans Georg, written by herself.”

Why did the copyist deem it so important that the countess had written the recipes in her own hand (mit Aigner handt) or that she had written them herself (selbsten geschrieben)? I think there are several possible answers. Most obviously, this emphasis underscores the important connection between text and practitioner: the fact that Dorothea had transferred her arts directly into paper and ink tied the document to her considerable reputation. A recipe collection carefully written in the hand of a well-known practitioner was a valuable object indeed.

To return to my students’ complaints about having to write out their exams by hand, their grumbles might highlight a second answer to the question. Writing was difficult. Copying out recipes required much care and a lot of time. To do a meticulous job was a laborious process.  Dorothea of Mansfeld herself indicated that writing down recipes was no simple matter. When an acquaintance, Anna of Saxony, asked Dorothea to copy out some of her memorized recipes in 1561, Dorothea cautioned that it was no easy process. She first needed “empty books in which to write” and thus “humbly” asked Anna to send “three books bound in parchment, one made of large paper, the others of small paper.” Moreover, she warned Anna, “Your Noble Grace must have patience, for such things take time.” [iii] Recipes written in Dorothea’s hand represented the painstaking efforts of a highly respected and highly ranked woman, and as such, they had great value.

A final reason for emphasizing that Dorothea had written the original recipes herself may be a simple matter of penmanship. As anyone who has worked on German court documents can attest, most sixteenth-century aristocrats – and particularly women – did not have stellar handwriting. Anna of Saxony frequently expressed embarrassment about her own writing, which she considered to be clumsy and unsightly.  In contrast, and highly unusually, Dorothea of Mansfeld wrote in a beautiful, neat, even, humanist hand.

A recipe in Dorothea von Mansfeld’s handwriting

Dorothea’s texts were thus valuable both for their outward appearance and for the promise of medical efficacy in their content. As I head off to decipher my students’ exams this weekend, I suspect I will appreciate this respect for good penmanship!

A version of this post appears in my forthcoming book, Panaceia’s Daughters: Noblewomen as Healers in Early Modern Germany, which will be published by the University of Chicago Press in 2013.

[i] Hohenlohe Zentralarchiv Neuenstein, Best. GA, U5.

[ii] Ibid.

[iii] Dorothea of Mansfeld to Anna of Saxony, June 1, 1561, SHStA Dresden, Geheimes Archiv, Loc. 8528/1, fol. 329r.

Recipe Organization: It’s not as easy as A, B, C.

By Elaine Leong

In my last post, I bemoaned the lack of a flexible search engine and information management technologies in the ‘favourites’ recipe box of the Epicurious iPhone app.  While still declaring my adoration for the app, I would like to talk a little more about issues of categorization in alphabetical information organization.

Now some of you might wonder, is she seriously offering a post about information categorization and alphabetization? Well, yes I am! And I bet this will even spark debate around your dinner table tonight!

Why don’t I start by sharing with you some of the recipes in the ‘B’ section of my Epicurious app recipe box: Baked pork chops with a parmesan sage crust, Baltimore crab cakes, Barbecue turkey burgers, Bass with herbed rice, Beef stroganoff and Blueberry buttermilk pancakes.

Of course, this is a historical recipes blog and so why don’t we pair this with a look a few of the recipes under ‘B’ in Johanna St John’s alphabetically organized mid-seventeenth century recipe book: for a kanker in a woman’s Brest, Dr Mathias for the whites and the weaknes in the Back, for a Bone ach excellent,[1] for Bleeding at the nose, For a Blast or the poison of the Toad,[2] for any knob or hardnes in the Brest or milk quard,[3] For the Bitting of a mad dog never failing and Mr Boyles Balsame of Sulphire.[4]

As you can see, inadvertently, the electronic search engines of the Epicurious iPhone app used several different knowledge categories to create the list of my favourite recipes beginning with ‘B’.  Here we have cooking method (baked, barbecue), locality (Baltimore) and ingredient (bass, beef and blueberry).  Johanna St. John, too, uses several different categories: parts of the body (breast, back, bone), action (bleeding), type of medicament (balsame), and external actions on the body (blast, dog bites).

Alphabetization and categorization is not as simple as A, B, C. While it is obvious that the Epicurious app merely assumed that the first word of each recipe title represented the key word, Johanna St. John’s parameters for categorization are not so clearly laid out. In fact, it appears that she herself was unsure about particular groupings and, in a later reading of the books, re-categorized a number of recipes.  Take a look at this folio, from the ‘W’ section, below:

Wellcome Western MS 4338, fols. 210v-211r.

 Many of the recipes on this page are to be used during childbirth. Some ease the experience of the mother-to-be, while others address potential complications.  In my mind, these recipes were first collected in the ‘W’ section as St. John saw them as a cohesive body of knowledge dealing with Women’s health concerns. However, if you look closely, you can also see a number of letters written to the right of the recipe titles.  Thus, a ‘D’ is written next to ‘To hasten delivery’, a ‘R’ next to ‘For an immoderate flux of the Redds’ and a ‘G’ next to ‘A Glister to be given in labor’ and so on…

Initially, these letters baffled me but after a bit of pondering, I realized that they are records of St. John’s second attempt to categorize her book of medical knowledge. Evidently, the second time round, she decided that a remedy to haste Delivery should be filed under ‘D’ rather than ‘W’, and that the ‘Redds’ and ‘Glister’ are the keywords in the other two recipes. St. John’s first pass at categorization suggests that, for her at least, there is a defined body of knowledge dealing with women’s health issues. In her second pass, this knowledge was folded into the rest of her collection.

So, where recipes are concerned at least, our methods of categorization are revealing of how we imagine and view bodies of knowledge. They also, as we now know, play a crucial role on whether we can ever find the required recipe again.  After all, I don’t immediately look under ‘B’ for pork chops or crab cakes, do you?

[1] Wellcome Library, Western MS 4338, fol. 14r.  For emphasis, I have capitalized and put in bold what I think are the relevant ‘B’s in these recipe titles.

[2] Ibid., fol. 14v.

[3] Ibid., fol. 16r.

[4] Ibid., fols. 17r and 18r.