No, this is not about Jancis' old book on grape varieties [Vines, Grapes & Wines, 1986] (nor the new one [Wine Grapes, 2012]). It's about variety or, if you like, diversity. Diversity is one of the buzz words in politics and in (big multinational) business. But when it comes to wine, I really appreciate diversity too. I might be nuts about Jura and Vin Jaune, going through a flor phase at the moment, but when people ask me which wines I like, I usually tell them: 'it depends'. Because it really does depend. Which...