Country Life speaks to a Massey University professor who specialises in nutrition and food chemistry about different types of milk - their pros and cons.

You can find photos and read more about the stories in this episode on our webpage, here.

With thanks to:

• Louise Brough, Massey University

And to hear more from the previous guests featured:

• Alex Irvine of Canterbury's Choice
• Cameron Ravenwood of Fernglen Farm
• Frans Steenkamp of the now closed Brooklyn Creamery
• Dr Gert-Jan Moggré, the man behind Plant and Food's Barley Dairy Project

Go to this episode on rnz.co.nz for more details