Hi Lisa! Including ice cubes or water towards your oven can definitely help with crust development (specially when baking sourdoughs!). Though It's not at all absolutely needed, it can help create an attractive loaf. Here's a little bit more information on the procedure: Baking bread with steam Delighted Baking! Proof https://byd73950.ziblogs.com/28296277/5-easy-facts-about-sourdough-traduction-described