Healthy dog treats made with raw beef liver are produced using a process known as freeze-drying. In this process, fresh raw beef liver is first sliced into thin pieces and then quickly frozen at extremely low temperatures. The frozen liver slices are then placed in a vacuum chamber where the water content is removed through a process called sublimation, which involves turning the frozen water directly into vapor without melting it first. This leaves behind the dry, nutrient-dense beef liver slices.

The freeze-drying process preserves the natural nutrients and flavor of the raw beef liver, while eliminating the need for preservatives, additives, or cooking processes that can reduce the nutritional value of the liver. The resulting dog treats are high in protein and other essential nutrients that support a healthy and balanced diet for dogs.

It's important to note that while freeze-dried raw beef liver can be a healthy and nutritious treat for dogs, it should be fed in moderation as part of a balanced diet. It's also important to ensure that the beef liver used in the treats is sourced from high-quality, reputable suppliers and is free from any harmful contaminants or additives.