Contains: Starter and Recipes. In early California, sourdough was much a part of the Goldrush of 49 as gold itself. Traveling throughout the West in the packs of miners and settlers, it eventually found its home in San Francisco. The air in the Golden Gate region enhanced the bread made there with a wonderfully distinct taste. San Francisco has become world renowned for sourdough bread. Goldrush has removed the mystery of creating our time honored sourdough! With Goldrush Sourdough starter recipes it is easy to create the tangy flavor and hearty aroma of sourdough bread anywhere in the world! It works in bread machines too. Made in California.