Hi Bruce! That's a great question. And the answer: no. The natural yeast in the air will start the process in the flour and water almost immediately, and though it'll take a few days, as long as you keep feeding it and keep it happy, that starter should start to grow on it's on pretty quick. It's actually a real fun process to watch. So give it a go, and let us know how it all comes together. Happy starter! 

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