What You Need to Know
This process involves the sublimation of frozen water, preserving nutrients and flavor. The technique requires careful control of temperature and pressure to ensure efficient sublimation. The resulting product can be stored for long periods of time, making it ideal for long marches, expeditions, and ceremonial purposes.
Key Parameters
Temperature
-20°C
-30°C - -10°C
Time
18 hours
12 hours - 24 hours
Equipment
Freeze dryerVacuum pumpTrays or shelves
Steps
- 1.
Chuño (Andean highlands): Preserves potatoes through freeze-thaw cycles
- 2.
Charqui (Pre-Columbian South America): Creates lightweight preserved meat for travel
- 3.
Tunta (Peruvian Andes): Produces white freeze-dried potatoes through extended process