Here in the U.S. some commercial so called sourdough bread actually contains yeast with sourdough flavorings, and is not 100% sourdough. The sourdough bread that I make for our house , family, and friends, just contains 3 ingredients, flour, water, salt, thats it. Of course the starter is made up of just flour and water. One of our friends who has been eating our sourdough bread for about a year told me she can't go back to store bought bread after eating ours. Thats a nice compliment.

Excellent.