With high-end chefs being increasingly considered as artists, gastronomy offers a new domain for our understanding of creativity. As several claims have been made about the link between synaesthesia and creativity, one would expect to find at least as many synaesthetes among chefs as among painters, composers, or writers—and perhaps even more—given the highly multisensory nature of the culinary arts. Here, we examine why synaesthesia is still under-reported among creative chefs. Does the absence of such reports merely reflect the fact that synaesthesia is so overly common when it comes to the chemical senses to even merit attention, or on the contrary, that synaesthesia involving the chemical senses (i.e. smell, taste, or their composite, flavour) as either the “inducer” or “concurrent” is really rare? An alternative explanation, which we advance here, is that synaesthetic creativity, when expressed in edible form, may simply not be very tasty: As such, the very fact that the fruits of the artist’s work are consumed may fundamentally distinguish the culinary arts from other inedible forms of art.
Chefs are increasingly being considered as the artists of the kitchen . Even those who would tend to disagree with this label  nevertheless still accept high-end gastronomy as a truly creative endeavour. From the introduction of new ingredients, the refinement or elaboration of new culinary techniques and flavour combinations, through to the design of daring food presentations and complex meal narratives , modernist chefs are doing far more than merely pushing previous knowledge and skills to their limits. Instead, those at the top of their game are constantly creating new dining experiences. Because of its embodied and sensory nature, gastronomic creativity might, then, offer a great domain to understand human creativity.
Evidence collected over the last century or so suggests that synaesthesia may underlie much creative thinking and be over-represented among artists and art students [4–7]. Synaesthesia is the rare neurological condition in which people automatically experience a specific sensory or conceptual concurrent on perceiving or imagining a particular inducing stimulus [8–11]. While the prevalence of synaesthesia in the general population is estimated to be 6 % maximum, self-reports of synaesthesia among art students are about 23 % ; more systematic tests conducted with 100 art students found that 7 % saw letters in colours (a condition known as colour-grapheme synaesthesia) as compared to 2 % in a random sample of the population. As the inducer-concurrent repertoire in synaesthesia tends to be highly idiosyncratic , the suggestion has sometimes been made that it might underlie the tendency to come up with original artistic combinations.
For well over a century now, the inspiration of many artists has been attributed, sometimes by themselves and sometimes by their late interpreters and biographers, to their synaesthesia: Just take painters such as Wassily Kandinsky or David Hockney, musicians and popular singers (from Alexander Scriabin to Jean Sibelius and Olivier Messaien, through to Jimi Hendrix, Pharrell Williams, and Lady GaGa), and poets and writers (like Charles Baudelaire and Vladimir Nabokov [14, 15]). As such, one might also have expected to find a surprisingly high number of synaesthetes among the most creative chefs. However, to the best of our knowledge as psychologist, chef, and philosopher interested in the condition, synaesthesia is very seldom reported by or among chefs. Furthermore, an internet search for “synaesthesia + chef” is no more conclusive, turning up virtually nothing of interest either. But is the absence of evidence evidence of absence? If not, where are all the synaesthetic chefs? The first goal of this paper is certainly to encourage the eventual synaesthetic chefs out there to report and describe their condition, or what they think of as unusual sensory blending guiding or interfering with their practice. Besides this call for testimony, we want to argue that a fresh look at culinary artistry is likely to help clarify the link between synaesthesia and creativity, as well as the differences and similarities between the culinary and other inedible art forms.
Where are all the synaesthetic chefs?
A few internationally renowned chefs, such as Homaro Cantu (of Moto fame) and Heston Blumenthal (of The Fat Duck among many other culinary ventures) have suggested that they might have had synaesthesia as a child . However, few chefs report having the condition as a professional adult. The one chef whose writing might, at least at first glance, suggest synaesthesia, namely Paul Bertolli , turns out, on closer inspection, most probably not to have the condition (see , for a critical evaluation of this case). Our own internet-based searches have turned up only one other pastry chef with the condition (reported in ). If there are others, they certainly are not particularly vocal about their synaesthesia. Perhaps there are closet synaesthetes afraid of what their colleagues would tease them about in the heat of the kitchen. But given the rapid growth of multisensory experience design (see , for a review), and the related interest in synaesthetic design more generally [21, 22], one might have expected that more of the increasingly popular chefs would have started to come out of the woodwork. But they have not. So what exactly is going on here? Is there some deep-seated reason why synaesthesia and culinary artistry just do not mix?
The contrast here with other art forms is striking [4, 14]. In the higher, or inedible arts, such as painting, music, literature, and poetry, many artists have claimed, or have been identified, to be synaesthetic. These writers, painters, musicians, and novelists regularly claim to have the condition, and what is more seems to utilize the unusual concurrents that they experience in their art. Some of the third-person attributions are often meant to make sense of some of the intriguing comments, which artists have made about their own work, and should be taken carefully (see , for some psychological detective work here). Many psychologists have nevertheless supported the link between synaesthesia and artistic creativity [5, 7]. The connection would appear to operate at two levels, with on the one hand, increased neural connectivity in synaesthesia being said to facilitate the creative association of ideas , and on the other, the synaesthetic associations experienced by synaesthetes, at least in the audiovisual case, being rated as pleasant by non-synaesthetes .
Too pervasive to be noticed, or too rare to emerge?
The first goal of the present piece is certainly to encourage more chefs to report on their possible synaesthesia and hence to get a better sense of the prevalence of this condition among those practising the culinary arts. But what do we expect chefs to report on? Food, and the chemical senses more specifically, is one domain where the tensions inherent to the definition of synaesthesia [25, 26] are perhaps most visible. If one takes synaesthesia to cover any experience of a conscious concurrent in an unstimulated modality, our tendency to confuse tastes and flavours , to describe odours using taste terms such as “sweet” for the aroma of vanilla, strawberry, or caramel (see , for a review), or even to feel acidity of our mouths when seeing a lemon might mean that we are all synaesthetes when it comes to food.1 If one follows this claim made, for instance, by Stevenson and Tomiczek , the existence of synaesthesia in the domain of flavour could simply be so ubiquitous that chefs might not be expected to have anything worth commenting on. On the other hand, if synaesthesia needs to be idiosyncratic and consistent over time, then the fact that taste-smell confusions are so common and that novel smells can acquire a particular taste association within just a few trials might mean that one would not want to count these broad tendencies as synaesthesia [18, 30].
With this more constraining definition of synaesthesia in hand, we would expect chefs to come out with specific cases where smells or tastes induce atypical experiences in other modalities (e.g. colours and sounds) or are systematically experienced when other non-chemical objects (e.g. shapes, words, and music) are presented. This, of course, assumes that the specific nature of the inducer-concurrent modalities determines the kinds of artistic activities that the synaesthete engages in—a claim which while on the surface plausible, cuts across the claim that it is a general enhanced connectivity that gives the creative boost [23, 31], and not a localized one. In all cases, then, chefs could be narrowly expected to present a higher prevalence of chemically related synaesthesia (already rare among the 60 and more forms of synaesthesia documented to date) or other kinds of synaesthesia (like colour-graphemes) than the 5–6 % documented in the general population .
Synaesthetically inspired foods just do not taste that good
We would, however, like to raise another hypothesis. Perhaps the reason why there might not be many synaesthetic high-end chefs out there might not be that there are fewer synaesthetes who attempt a career in the culinary arts in the first place, but that the dishes created by synaesthetes to capture their experiences simply just do not have a wider appeal: Dishes composed out of combinations dictated by idiosyncratic synaesthetic inspiration might not taste that good to the rest of the population. Just take the following recipe suggested by the synaesthete Sean Day as a case in point (taken from (, p. 2)).
The above examples hopefully make clear the challenge. Day himself is under no illusion that the recipe he proposes will necessarily be appreciated by anyone other than himself. While chicken and orange do sometimes go together in recipes, chicken and ice cream does not intuitively sound like a promising culinary combination. Other examples of the difficulty of translating synaesthetic impressions through cooking would also include the famous synaesthete Michael, the inspiration for Richard Cytowic’s book “The man who tasted shapes”, having served what seems a perfectly decent chicken, who apologizes that “it’s nearly spherical, […] I can’t serve this if it doesn’t have points” (, pp. 392–393). In this case, the synaesthete experiences a pointy shape in his hand (the concurrent) when he smells the aroma of the chicken cooking (see also ).
The most important question to be asked, in our sense, is not so much how many chefs are synaesthetic, but the role that synaesthesia could play in culinary creativity. If idiosyncratic associations that are experienced by synaesthetes, at least in the audiovisual domain, tend to be more liked by non-synaesthetes , do we expect the same to be true for gastronomy? Perhaps the culinary arts, however inventive chefs are, are linked to more basic nutritional needs, familiarity, and hedonics. They continue to be bound to the subjective pleasantness of certain tastes or flavour combinations, and our distaste of others. This is part of the reason why some commentators have suggested that culinary endeavour, no matter how aesthetically pleasing the result, can never be considered a true art form [2, 34, 35]. Part of the resistance here about considering food even as a potential object of aesthetic appreciation is that since food is eaten, we cannot make a disinterested judgement about it. Hence, or so the Kantian argument goes, it cannot be an object of aesthetic appreciation, in the way that the disinterested contemplation of a landscape, a painting, or a piano concerto afford. Contrary to this line of argument, however, we would like to suggest that the lack of relevance of synaesthesia for gastronomy might show, not that it cannot be an art, but that its artistic value does not lie in the expression of originality and individuality. Its value consists on the contrary in a communal sharing of the beauty of foods and flavours (see Dinesen’s Babette’s Feast  for a literary rendition of this) and the playful reinterpretation of culinary codes and traditions.
Synaesthetic chefs at the top of their profession, either today, or at any time in the past, are noticeable by their absence from the literature or popular culture more generally (at least when one’s attention is drawn to it). The absence is especially striking at the present time, given both the huge public exposure of many chefs these days [37, 38], not to mention the explosive growth of interest in multisensory dining and multisensory experience design [20, 39–42] and the seeming over-representation of synaesthetes in the other arts ([5, 7]; though see also ).
This absence raises different questions—the most obvious of which being what we expect culinary synaesthesia to be like. Are we looking for synaesthetic pairings involving taste and smell, whose incidence is very rare, idiosyncratic synaesthesia in other words, or are we ready to consider that everything having to do with flavour is synaesthetic? Trying to demonstrate that the incidence of synaesthesia in chefs is any different, statistically speaking, either from other groups of artists, or from the public at large, will need us to decide on what synaesthesia is (or rather, how exactly it should be defined). There is, though, a more fundamental question to be raised here: Why would we even expect chefs to be synaesthetes and to come up with flavour associations grounded in their idiosyncratic experience? Although creativity is synonymous with originality and individuality in certain domains, the understanding of creativity in other domains, gastronomy in particular, might lead us to revise this definition and consider the role that communal values and references play in it.
Here, it is important to distinguish synaesthesia from the rich olfactory mental imagery that some people, especially experts, have [43, 44]. It is an interesting question as to whether chefs have more pronounced imagery in the chemical senses than do non-experts. There is evidence that people can, under certain circumstances, imagine the consequences for taste of mixing unusual combinations of ingredients . The question of whether such skills, which again, presumably rely on mental imagery are better in chefs is currently unknown .
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CS and OD would like to acknowledge the AHRC Rethinking the Senses grant (AH/L007053/1).
The authors declare that they have no competing interests.
All of the authors contributed to the writing of this opinion piece, and all authors read and approved the final version of the manuscript.
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Spence, C., Youssef, J. & Deroy, O. Where are all the synaesthetic chefs?. Flavour 4, 29 (2015). https://doi.org/10.1186/s13411-015-0039-8