Maggie Beer's Pumpkin and Pistachio Cake Recipe

I am a big fan of the SBS (formerly ABC) cooking show, The Cook and the Chef.  This show is now more than 10 years old, but I never tire of the re-runs.  The rapport between Maggie Beer (the cook) and Simon Bryant (the chef) is a joy to behold, regardless of what it is that they are When I was at home over Christmas last year (yes, an age ago), Maggie Beer made a Pumpkin and Pistachio Cake on The Cook and the Chef (Episode 30, screened originally on 2 September 2009) that I could not get out of my head - it just looked so good.  I went to great lengths to find the recipe as the ABC website referred to on the program no longer exists, and made this cake at a time when I bought a whole pumpkin and made three different pumpkin cake…