Hello Lisa! Introducing ice cubes or h2o to the oven can definitely help with crust advancement (particularly when baking sourdoughs!). Although it is not Definitely needed, it can help generate an attractive loaf. Here's a bit more details on the method: Baking bread with steam Satisfied Baking! Hi Amy, this https://byd14689.blogoscience.com/34250622/the-definitive-guide-to-sourdough-pancakes