Chances are, you’ve spent more time thinking about the specs on your smartphone than about the gadgets that you use to put food in your mouth. But the shape and material properties of forks, spoons, and knives turn out to matter—a lot. Changes in the design of cutlery have not only affected how and what we eat, but also what our food tastes like. There’s even evidence that the adoption of the table knife transformed the shape of European faces.
…But if forks have a complicated history, the future of spoons may well be golden. Literally. Zoe Laughlin, who confessed to being driven, in part, by a childhood obsession with finding the perfect spoon, has been conducting scientific research into the sensory properties of materials. Working out of the Institute of Making, a London-based cross-disciplinary research club, she started exploring the different tactile and aural sensations of metals. Next, she wondered how metals taste. Scientists had researched this question before, by having people swish metal salts around in their mouth. To Laughlin, that methodology made no sense. We put metal in our mouths every day, in the form of cutlery—why not just do a spoon taste test?
Before long, she had volunteers lining up to suck on a set of 7 spoons that were identical in shape and size, but plated with different metals. Her results showed that different metals really do taste different—the atomic properties of each metal affects the way the spoon reacts with our saliva, and so, for instance, copper is more bitter than stainless steel.
Figure 4.2: The swatch of spoons used in the experiments. From left to right: copper, gold, silver, tin, zinc, chrome, and stainless steel.
Her next step was to figure out how the taste of different metals affects the flavor of food. Working with a top chef, she hosted a spoon-and-food pairing dinner party, in which food writers and scientists discovered the curious affinity of tin for lamb and pistachio. One spoon ruled them all, however: as Laughlin put it, “The gold spoon is just sort of divine. It tastes incredibly delicious and it makes everything you eat seem more delicious.” After tasting mangosorbet off a gold spoon, Laughlin told us, with a note of regret in her voice, “I thought, I can’t believe I’m ever going to eat off anything other than gold ever again. Sadly, of course, I do.”