Polish Sourdough - 1.0

My first attempt at sourdough was borderline success. The consistency and crust was good but somehow it lacked the real bite and bitterness of the bread that I remember. There are a couple of things I think I may have done wrong.

My starter sprang into life with such vigour that I decided not to feed it or refrigerate it and when the time came to use it, it had developed a hard crust on top and apparently ceased to ferment. I could not understand the logic behind the feeding regime described in the recipe, so I decided to change it. A mistake evidently, recipes are sacred things.

On to version 1.1...