What is "sour bread"?

Sourdough bread, also known as sour bread, is a type of bread that is made from a fermented dough using naturally occurring yeast and bacteria. The dough is typically made with flour, water, and a small amount of starter, which is a mixture of flour and water that has been allowed to ferment and develop a colony of wild yeast and bacteria. The fermentation process gives the bread a distinct tangy flavor and chewy texture, and also makes it more digestible and nutritious than bread made with commercial yeast. Sourdough bread has a long history and is a staple in many cultures around the world, particularly in Europe. It can be made in a variety of shapes and sizes, from a classic round loaf to baguettes or boules, and can be customized with ingredients like olives, herbs, or cheese to enhance its flavor. Sourdough bread is often praised for its unique taste and health benefits, and is a popular choice for those looking for a more natural and flavorful bread. It can be found in many bakeries and grocery stores, or can be made at home using a sourdough starter and a few simple ingredients.