Great question! Dehydration
and Freeze-drying both seek to remove moisture from food, however the
methods are vastly different. Dehydrators use heat to evaporate
water, whereas Freeze drying uses vacuum freezing (a process called
sublimation) to gently remove water, without damaging the food and
the delicate vitamins and essential phytonutrients. This allows the
food to retain its original shape, texture and concentrated taste.
Freeze dried products are generally more expensive than Dehydrated
equivalent products, but are way superior in every other aspect.