We get this question often!
Dehydration is a simple process of applying heat and air current to a food or substance, thereby removing the moisture and creating a dry, shelf-stable product.
Its a method of food preparation that is as ancient as humanity.
Our ancestors have always dried excess meat, fish, fruit and herbs for later use.
Freeze-drying is a modern industrial food process.
Cold temperatures and inverse pressure are applied to the food in a sealed vacuum chamber.
The moisture content of the food is removed via sublimation.
If you compare dehydrated food items to freeze-dried food items you will notice the freeze-dried ones are crispy and porous, they have somewhat of a powdery quality.
Dehydrated foods have more of a leathery quality (say, beef jerky or fruit leather). They are more recognizable as their original food.
In my opinion, dehydration is the superior method for liver and other animal organs.
Freeze-drying is the method of choice for the big brands of animal organ supplements.
It's faster and more accessible in the mass-production facilities that they utilize.
Our product has a stronger scent (sign of retained nutrients) and is overall closer to the original substance of beef liver than the powdery capsules provided by the other major brands.