How to invest in things other than property and shares

You can be passionate about lots of things - wine, fashion, art but would you invest in them? Gertjan Verdickt from the University of Auckland's business school, is the co-author of The Passion Portfolio: Investing in Style. Described as an "offbeat guide", it will talk you through what to do and what not not to do if you want to invest in something other than property or shares.