There is nothing like cracking open a crusty loaf of bread, that is unless it is sourdough bread. The airy and tangy crumb is pure delight.
Sourdough is the oldest and most original form of leavened bread. All you need is grain, water and air to sit at room temperture. The wild yeast in the air will settle in the mix, eat the natural sugars and convert them into lactic acids which give it a sour flavor. They also give off alcohol and carbon dioxide. The carbon dioxide is what will cause the bread to rise.
All this science yields one delicious bread.
April 1 is National Sourdough Bread Day