The world's largest producer of wine, Italy has perhaps the world's oldest wine-producing regions. Barolo, Brunello, and Barbareso (collectively known as 'the Killer B's') are perhaps some of the most sought after wines in the world. Many whisky producers have toyed with using casks from the Super-Tuscan producer Tenuta San Guido, famous for their (bloomin' amazing) Sassicaia bordeaux blend with varying degrees of success.