Which food product innovation, introduced in the 1940s, revolutionized restaurant efficiency and home cooking by allowing pre-prepared foods to be stored and reheated quickly?

In the ever-evolving world of food technology, certain innovations have dramatically changed how we experience cuisine. Product innovations in the food industry have transformed preparation methods, extended shelf life, enhanced flavors, and created entirely new dining experiences. Test your knowledge about a groundbreaking food innovation that revolutionized the restaurant industry and home cooking alike.

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Flash freezing (Clarence Birdseye's method)
Microwave cooking (based on radar technology)
Vacuum sealing (sous-vide technique)
Freeze-drying (used first for coffee production)