Hello Lisa! Introducing ice cubes or drinking water in your oven can definitely help with crust enhancement (particularly when baking sourdoughs!). Although It is far from Certainly required, it might help build a good looking loaf. Here is a little bit additional information on the procedure: Baking bread with steam https://event60135.blogsidea.com/34397549/the-best-side-of-sourdough-pizza-crust