For decades, David Downie and Alison Harris have been exploring Burgundy--they walked clear across it in 2006--reporting on their finds for top magazines and newspapers worldwide. This is the third Terroir Guide they have collaborated on and perhaps the most detailed and personal of any so far. Burgundy is one of France's great food and wine regions. Many of the world's most sought-after wines are produced there; so, too, are some of the most underrated,...