Freeze-drying is a gentle way of preserving food. First, the food is frozen at very low temperatures. It’s then placed in a vacuum. Inside the vacuum, the temperature is slowly raised. This change lets the frozen moisture in the food turn directly into vapour, skipping the melting stage. This process, called sublimation, removes moisture without using high heat.
Freeze-drying never exposes the food to high temperatures. This method preserves its natural nutrition, taste, and texture, making it similar to gently cooked food.
The finished food contains very little moisture, usually below 5%. Bacteria and mould struggle to grow without moisture. This allows food to be stored safely, without the need for artificial preservatives.
Freeze-drying keeps proteins and amino acids whole. It also preserves heat-sensitive vitamins, such as A, E, and B1. Plus, it protects natural fats and omega-3s from heat damage. The aroma and flavour also stay close to freshly cooked food, which dogs naturally enjoy.
When you add hot water, the food rehydrates and returns to a fresh, gently cooked form. While retaining nearly all of its original nutrition.