Sourdough Starter
Estimated value as of 2026 · King Arthur Baking, Cultures for Health, Bread Brothers Bakery[1][2][10]
A live or freeze-dried culture of wild yeast and bacteria used to leaven sourdough bread, sold as an ingredient for home baking.
Fun fact Many commercial starters trace their lineage back over 100 years, like the one from Sunrise Flour Mill originating in Italy.[7]
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