A proofing chamber, also known as a proofing box or proofer, is a specialized piece of equipment used in baking to provide an optimal environment for yeast fermentation and dough rising. This chamber creates controlled conditions of temperature and humidity to encourage the yeast activity, allowing the dough to rise properly before baking. Proofing is a critical step in the bread-making process as it affects the texture and structure of the final product.

Proofing chambers come in various sizes, from small countertop models for home bakers to larger commercial units used in bakeries and food production facilities. They typically feature a temperature control system and often include humidity controls to ensure an ideal environment for yeast fermentation. The controlled proofing conditions help achieve consistent and high-quality results in bread and other yeast-based baked goods.