A bakery fridge is a refrigeration unit specifically designed to store bakery ingredients and finished products at optimal temperatures to maintain their freshness and quality. It is essential for a bakery because it helps preserve the integrity of perishable items like dairy products, eggs, and pre-prepared dough, ensuring that they remain safe to use and free from spoilage. The controlled environment provided by a bakery fridge prevents bacterial growth and extends the shelf life of these ingredients, which is crucial for maintaining consistent product quality and reducing waste.