Blink

by Malcolm Gladwell

Expert food tasters are taught a very specific vocabulary, which allows them to describe precisely their reactions to specific foods. Mayonnaise, for example, is supposed to be evaluated along six dimensions of appearance (color, color intensity, chroma, shine, lumpiness, and bubbles), ten dimensions of texture (adhesiveness to lips, firmness, denseness, and so on), and fourteen dimensions of flavor, split among three subgroups — aromatics (eggy, mustardy, and so forth); basic tastes (salty, sour, and sweet); and chemical-feeling factors (burn, pungent, astringent). Each of those factors, in turn, is evaluated on a 15-point scale. So, for example, if we wanted to describe the oral texture of something, one of the attributes we would look at is slipperiness.