One of the bonuses of being in New Zealand is listening to Kim Hill on National Radio on a Saturday Morning.
Last week she interviewed Shirley O Corriher, a food scientist who has been the " Go To Gal" for a number of chefs and food writers (the famous Julia Child among them).
Catch the pod-cast on National Radio's Website. I haven't found out how to link to it directly, but you can get there by clicking on the link to the show on Saturday December 9th , then scrolling down to the podcast.
It covered basics such as the science behind the reason why you can't make mayonnaise from extra virgin olive oil (Now I know what I was doing wrong!)