When you take a bite of your favourite dish, you might assume your taste buds are doing most of the work. The famous five tastes — sweet, sour, salty, bitter, and umami — are the foundation of human flavour perception. 

Flavour can be thought of as encapsulating the overall experience of eating the food, with taste being one aspect of that experience. In fact, science has revealed that flavour transcends the mouth. Eating is a full-body sensory experience shaped by sight, smell, hearing, touch, and even memory. 

Senses of flavour

Somewhere between 75–95 per cent of what we think of as taste actually comes from our sense of smell, which is why food seems extra bland when we are congested from a cold. While taste buds on the tongue send signals about basic tastes, these signals don’t travel alone. Once they reach the brainstem — the part of the brain responsible for relaying sensory information — taste signals are integrated with smell signals to create the rich, complex perception we call flavour. 

Vision also plays a surprising role in creating flavour. Humans are instinctively drawn to what we perceive as beautiful; this also holds true for food presentation. Visual cues play a critical role in shaping our expectations and enhancing our experience of flavour. 

A 2014 study at the Culinary Institute of America found that attractively plated meals were consistently rated as better overall compared to the same meals arranged less artfully. Researchers suggest this effect is due to the visual presentation signalling attention to detail, culinary expertise, and a high standard of ingredients or execution. Ultimately, this demonstrates that the eye plays a key role in priming the palate. 

Just as vision sets the stage for flavour, sounds can subtly tune our tasting experience. Sound is another powerful, if less obvious, ingredient. Some restaurants deliberately pair dishes with curated music to enhance flavour, a practice dubbed sonic seasoning. 

In a 2015 study conducted in Belgium, customers at a chocolate shop evaluated sweets while listening to specific auditory stimuli. For example, some chocolates were matched with songs from different countries. Chocolates that were paired with music that matched their geographical origins were reported to have provided a more enjoyable tasting experience for customers, who were even willing to pay extra for them. 

So, it turns out that what we hear doesn’t just change how food tastes; it can even change what it’s worth, likely because music reminds a person of their emotional connection or a personal experience with the food. 

Taste is also inseparable from touch. Studies conducted at Yale University Medical School demonstrated that the savoury flavour of monosodium glutamate (MSG) intensifies when the tongue is pressed against the palate, suggesting that movement and pressure heighten taste perception. Temperature matters too; warming the tongue slows adaptation to sweetness, making sugar taste sweet for longer. 

Flavour, in other words, is not only chemical but also shaped by the physical sensations of eating. But flavour extends even further, influenced not only by the senses but also by our cognitive abilities.

In one study at the Changshu Institute of Technology, participants were asked to memorize strings of numbers and letters before tasting sweet or bitter solutions. The results showed that the more information participants were asked to memorize, the weaker their taste sensitivity. This suggests that when the brain is under cognitive stress, such as juggling memory tasks, it devotes fewer resources to flavour.

Due to the interactions of various stress and food-related hormones, stress can also change our flavour preferences in food, often leading to a preference towards foods that contain more fat and sugar — ‘comfort foods’ if you will. These foods can, in fact, provide a feedback loop and lower stress, a reminder that what we taste and prefer depends as much on our mental state as on the food itself. 

This connection between mind and flavour is now being explored not just in labs, but also in restaurants, where chefs are beginning to treat perception itself as an ingredient.

Neurogastronomy and the future of fine dining

Over the last two decades, fine dining has begun to merge meals with art, science, and even technology. A popular example is Le Petit Chef in Toronto, where guests watch a tiny animated chef come to life on their plates as they dine. These multisensory experiences indicate the commercialization of perception itself. Here, lights, soundscapes, and even off-the-plate elements like tableware and scent diffusers are orchestrated to alter flavour perception. In other words, chefs are no longer just cooking food; they’re designing entire sensory worlds. 

The rise of multisensory dining owes much to neurogastronomy, a field coined by neuroscientist Gordon Shepherd in 2006 to study how the brain integrates sensory inputs into flavour. Beyond Michelin-starred restaurants, its insights are being applied to food marketing, product design, and even clinical care. For example, it’s being investigated to help cancer patients regain their sense of taste and enjoyment of food during treatment.

Ultimately, dining is not just about the taste buds but rather about the brain weaving a tapestry of sensory cues. So, the next time your favourite dish tastes a little different, consider the lights above you, the music playing, the plate beneath your fork, and even the memories it stirs. Eating is never just eating. It is, and always has been, a full-body experience.