Hello Lisa! Introducing ice cubes or drinking water in your oven can definitely assist with crust progress (especially when baking sourdoughs!). While It is far from Unquestionably important, it will help make a wonderful loaf. Here is a bit more info on the method: Baking bread with steam Delighted Baking! https://condo-near-me92693.dgbloggers.com/28589371/the-definitive-guide-to-sourdough