Ever since California's days of gold mining around 1849, sourdough has been an iconic bread and a staple of the Western cuisine. It is the oldest and the most original form of leavened bread, with the oldest recorded use of sourdough dating back to the ancient Egyptians.

During the gold rush period, the Boudin family (well-known bakers from France) came to San Francisco and became famous for their unique sourdough bread. It was a hugely popular food, especially for the hungry miners who flocked into the bakery every morning, appreciating the bread for its taste and durability.

The Boudin bakery has been using the same starter sourdough culture since 1849, called Mother Dough, and it is still operating today. The sourdough craze spread like wildfire, and today there is a huge number of artisanal bakeries that sell sourdough bread all around the San Francisco Bay Area.