Soft drying technology is mainly applied to fruits, because fruits are products containing a lot of sugar, after the amount of water in the fruit is separated but the amount of sugar remains the same, so the product after direct drying will be in soft condition.
Fruits like mango, banana, jackfruit, dragon fruit, longan, lychee, pineapple, durian, etc. contain quite a lot of sugar, so after drying naturally on the freeze-drying machine, they will be dried in soft form.