Ru007's post on her Sourdough with Polenta, Sunflower seeds and Pepitas motivated me to try her recipe since it looked amazing! I didn't have any Polenta but thought that cornmeal might be close enough and with her encouragement, I went ahead and used cornmeal.
The plan was to double her recipe and be done but my starter was 100% hydration as opposed to 80% like hers and my math got wonky when I started using the baker's percentages instead of the actual weights after I had soaked my cornmeal. No matter, I am really happy how it turned out.
Procedure: