A blast chiller, also known as a blast freezer or flash freezer, is an essential piece of equipment designed to rapidly lower the temperature of food items. These versatile appliances are equipped with multiple shelves where food pans or sheet pans can be stored and chilled at extremely low temperatures.

How Does a Blast Chiller Work?

Blast chillers or freezers function by circulating forced cooled air over the food placed inside. They come with various settings that can be adjusted depending on the temperature of the food, whether it’s room temperature, chilled, or hot. This rapid cooling process significantly reduces the formation of ice crystals on food, preserving its quality and flavor.

Temperature Range and Chilling Time

The temperature of a blast chiller varies depending on the manufacturer and settings chosen. However, they are capable of reaching temperatures as low as -40°C to -60°C or even lower to -80°C, ensuring rapid and efficient cooling. Typically, blast chillers can bring the temperature of food items down from +90°C to +3°C in about 90 minutes, depending on various factors such as the initial temperature of the food and the blast chiller settings.

Benefits of Blast Chilling

• Longer Shelf Life: Blast chilling extends the shelf life of food, reducing food waste and allowing restaurants to preserve and serve food at peak freshness.
• Nutrient Retention: By quickly cooling food, blast chillers help retain nutrients and maintain the quality of food products.
• Food Safety: Rapid cooling prevents bacteria from multiplying rapidly, reducing the risk of foodborne illnesses and ensuring food safety.
• Increased Efficiency: Blast chillers streamline kitchen operations by quickly cooling food during preparation, allowing chefs and cooks to work more efficiently.

Difference Between Blast Chiller and Freezer

While freezers hold food at below-freezing temperatures, blast chillers rapidly cool food by blowing cold air over it, gradually lowering the temperature in the chamber. While both are essential for food preservation, blast chillers are particularly beneficial for quickly cooling cooked food items to prevent bacterial growth and maintain quality.

Investing in a blast chiller can significantly enhance the efficiency and productivity of your kitchen, reducing food waste and ensuring the quality and safety of your food products. Whether you frequently freeze food for later use or need to cool food quickly during busy service hours, a blast chiller is a valuable addition to any foodservice establishment.