Cindy, 12 hours would be fine. The longer the poolish goes, the tangier it gets; and eventually the gluten starts to break down from the acid. Still, I'd think 16-18 hours would be OK, considering you're going to be combining the poolish with plenty of fresh flour. Enjoy the process! I think you'll be very pleased with the results. PJH
March 6, 2016 at 12:03pm
In reply to This really looks delicious. I'm going to give it a shot tonigh… by Cindy Pinney (not verified)