What You Need to Know
Freezing food preserves it from the time it is prepared to the time it is eaten. Since early times, farmers, fishermen, and trappers have preserved grains and produce in unheated buildings during the winter season. Freezing food slows decomposition by turning residual moisture into ice, inhibiting the growth of most bacterial species. In the food commodity industry, there are two processes: mechanical and cryogenic. The freezing kinetics is important to preserve the food quality and texture. Quicker freezing generates smaller ice crystals and maintains cellular structure. Cryogenic freezing is the quickest freezing technology available due to the ultra low liquid nitrogen temperature −196 °C (−320 °F).
Key Parameters
Equipment
Steps
- 1.
Nikkei Tiradito (Peru): Flash-freezing fish to achieve perfect slicing texture for Japanese-Peruvian fusion dish
- 2.
Scandinavian Frozen Herring (Sweden): Traditional preservation method for winter protein supply
- 3.
Chinese Mooncake Ice Cream (Hong Kong): Modern reinterpretation of traditional pastry through cryo-techniques