I am doing one podcast and plan to do a second.
The first is about coffee roasting, called Coffee Roasting Navigated. It was launched in December 2016 – go to http://coffeenavigated.net/podcast-roasting-navigated/
The other is about using your taste sense and how to improve. This podcast has not yet been launched in English. But I have made it in Danish since 2015. You can find it here http://smagefter.dk/kaffe/