Proofing Chamber

A dough proofer is a warming chamber used in baking that encourages fermentation of dough by yeast through warm temperatures and controlled humidity. It is also called a proofing box, proofing oven, or proofing cabinet.The proof measurement harks back to 16th-century England, when the government would put an extra tax on “proof spirits”—that is, liquor that contained a certain higher amount of alcohol. The word proof is used in the sense of showing that something is true or correct.