Since I first recieved my sourdough cake starter "Herman" , I have been enjoying experimenting with using it to make cakes, pancakes and biscuits (cookies). I can adapt just about any recipe to Herman, and he adds a slight sour tang and creates a light fluffy batter. Here's what I do to adapt a recipe, just use all the same quantities, but combine them in a different order: Melt the butter in a pot over a low heat. Stir in the flour, rapadura (sugar), and flavours (cocoa, ginger, spices), and add a slurp of Herman and any other liquids, put on the lid and leave the mixture at room temperature for a few hours (you can start this in the morning and bake in the afternoon, or even put it all in the fridge after a few hours and bake it later the next day, just depends on the outside temperature, in winter you could probably leave it out overnight). When you're ready to bake, add the egg and a good heaped tablespoon of baking soda (leave out the baking powder). T...