Baking bakery-quality sourdough at home is rarely about your folding technique; it is a battle of thermodynamics. Standard home ovens actively vent moisture, destroying the steam environment required for massive oven spring. In this section, we analyze the heavy-duty engineering behind proper bread baking. From the steam-retaining physics of enameled and bare cast-iron Dutch ovens to precision temperature control using smart proofing boxes and instant-read thermometers, we review the exact, high-ticket gear you need to stop baking dense, flat dough and start producing blistered, artisan crusts.