sourdough bread

I forgot to mention this yesterday, but I have started a sourdough "plant" so once established never need to buy yeast again. I had sourdough bread mentioned twice to me in one day by different people so decided to google it and have started a batch. It seems incredibly simple - 1 cup bread flour plus 1 cup warm water, put in a glass container (so you can see its bubbles) keep in a warm place and every day throw away half and add half cup of flour and half cup of water to feed it. After a few days, maybe a week, it is all bubbly, a froth on top and its done. That is your starter to keep in the fridge and only feed weekly. When you want to make bread, you save a cupful back for the future, and add flour, olive oil, sugar and salt to make your dough. We are still at the stage of growing the starter, feeding it daily and keeping it warm. Another day or so should see it ready to use. Anyone interested, this is the recipe I'm using. There were lots to choose from but this seemed the clearest.

http://www.io.com/~sjohn/sour.htm