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How does cryogenic freezing use liquid nitrogen to freeze food quickly?

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frozen meals — frozen meal Depositing of prepared meals in trays prior to freezing.

Cryogenic freezing is an industrial method designed to freeze food at an extremely rapid rate to maintain high quality. The process works by moving food products through a spray of liquid nitrogen or by immersing them directly into it.1

Because liquid nitrogen boils at approximately −196 °C (−321 °F), it extracts a massive amount of heat from the food upon contact. This rapid temperature reduction is critical because it ensures that ice crystals formed within the food's cells remain very small. Slow freezing, by contrast, allows large ice crystals to grow, which can rupture cell membranes and lead to a loss of moisture and flavor—a phenomenon known as drip—when the food is eventually thawed. By freezing the product quickly, cryogenic methods minimize this cellular damage and help preserve the texture and nutritional integrity of the food.123