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 right method for liver and other animal organs: it's traditional, simple, and gives a result that looks, smells and tastes like the real food.
Freeze-drying is the method of choice for many of the big brands of animal organ supplements.
It's faster and more accessible in the mass-production facilities that they utilize.
Our capsules have a rich, true liver aroma and are closer in texture to the original food than the powdery capsules of many larger brands.