I worked in a bake shop years ago for a short period of time baking bread, we had a proof box until I bought this oven I tried various ways to duplicate the same conditions. It was virtually impossible to duplicate those conditions. Not only can I proof the dough perfectly but can use the bread function which introduces steam in the beginning of the cycle to achieve the crisp crust on French bread and artisan breads. No more pouring water into a hot pan and quickly closing the oven door trying to entrap the steam. I’m very happy with this purchase and would recommend it to anyone. It’s great for warming up leftovers and keeping food warm. I would like to see a larger version of this oven become available.