What country is sour dough bread from?

While there is no single country definitively credited with inventing sourdough bread, it's believed to have originated independently in various cultures around the world, including:

* Egypt: Evidence suggests bread making with wild yeast existed in ancient Egypt as far back as 4000 BC.

* Ancient Rome: Romans used a "fermentum," which was similar to a sourdough starter, for their breads.

* Europe: Sourdough bread making spread throughout Europe during the Middle Ages and became particularly popular in France and Germany.

It's important to note that the process of creating sourdough bread, which involves using a wild yeast starter, likely developed naturally in different parts of the world due to the presence of yeast in the environment and the common practice of bread making.