Freeze-drying is a process based on water sublimation. The water goes from the solid state (ice) directly to the gas state (steam) without going through the liquid state.
This high end dehydration method removes all the water of the fruit…and nothing else! It retains the nutritional value of the fresh product, as well as its fresh flavour and colour.
It is also the most successful method of food preservation and can be rehydrated very quickly.