It sounds like you and your sourdough starter are ready to bake, Elena! The fact that it's expanding in size (as much as double the original size) means there's a health wild yeast culture in the starter. Continue to feed your starter regularly, giving it an occasional feeding of whole wheat or rye flour. We also recommend checking out our recently updated Sourdough Baking Guide for additional tips, tricks, and inspiration to bring your sourdough to where you want to be. Happy baking! Kye@KAF

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