Book excerpt: Wine is now one of the most popular drinks in the world. Many wine drinkers wish they knew more about it without having to understand every detail or go on a wine course. In The 24-Hour Wine Expert, Jancis Robinson shares her expertise with authority, wit and approachability. From the difference between red and white, to the shape of bottles and their labels, descriptions of taste, colour and smell, to pairing wine with food and the price-quality correlation, Robinson helps us make the most of this mysteriously delicious drink.