4 c. lukewarm water
1 pkg. activated dry yeast
1/4 c. sugar
5 c. flour

Pour water into a crock or a wide-mouth gallon jar. Pour in the yeast and let it dissolve. Stir it up and then add the sugar and flour and mix. Cover with a cloth and set in a warm place to sour. This process will take 2 or 3 days. When activity stops, the dough flattens out, an amber liquor comes to the top and it smells like the inside of a black cat, you've got it. Mix it up -- it will look like whipping cream. Put it in a glass jar with a screw-on lid and put it in the refrigerator. It will keep for months.