Sourdough bread

Sourdough works especially good for rye bread. You just substitute 1/4 to 1/3 rye flour. I add some to the starter when feeding, too.
My recipe is very rough. There is a lot of foreknowledge needed about the right feel to the dough, mixing technique, care and feeding of starters, kneading and shaping, rising (proofing), etc...
I forgot to add that the above recipe makes two kilos or two 2 lb. loaves.