Why do we blend?

Blending ingredients to produce something new is a distinctively human urge, and one of our most creative acts. We blend all sorts of products, such as tea, champagne and perfume. Did you know that blended whiskies combine over 30 single malts? In this week’s Why Factor, Barry Smith asks - why we blend. And why some blends work whilst others don’t.Presenter: Barry Smith Producer: David Edmonds Editor: Richard Knight