Au revoir, terroir? The science of what makes great wines tick 10 May 2015 by Chris Simms Magazine issue 3020 . Subscribe and save For similar stories, visit the Food and Drink and Drugs and Alcohol Topic Guides A vineyard's unique traits makes a wine – but not as expected. From minerals to microbes, we uncover the forces at work behind the world’s favourite tipple The truth behind the taste? Image: Itani/Millennium Images In the dimly lit cellar below a London wine shop, a man gives his glass a good sniff. His nose plunges too deep and, for a moment, resembles an inverted iceberg, bobbing in a Chardonnay sea. Then he snorts, and his laughter destroys the illusion. "That," says the woman leading the tasting, "is not how to nose your wine." As people start to get the hang of it, she asks us to shout out the flavours we detect. Everyone thinks they smell fruit. One woman says eucalyptus. Another tastes flint. Our oenological guide ...