Boudin is a bakery based in San Francisco, known for having invented sourdough bread. It was established in 1849 by Isidore Boudin, son of a family of master bakers from Burgundy, France, by blending the sourdough prevalent among miners in the Gold Rush with French techniques. Steven Giraudo, an artisan baker from Italy whose first job in America was at Boudin, bought the bakery in 1941. The Boudin bakery museum shows how sourdough bread is produced. The bakery still uses the same starter yeast-bacteria culture it developed during the California Gold Rush.