It is very easy to rehydrate freeze-dried food – you just add water. Freeze-dried food can also be rehydrated with broth or other liquids like goat milk. Just make sure whatever you’re using to rehydrate the food doesn’t contain any potentially harmful ingredients like onion or garlic.
Most commercial freeze-dried dog foods will provide instructions for rehydrating the food. Generally speaking, however, you just add your dog’s portion to his bowl then add the liquid. In most cases, an equal proportion of food to water works well.
It typically takes about 15 to 20 minutes for freeze-dried cat food to rehydrate, though the timing may vary by recipe. Large freeze-dried patties may take longer to rehydrate than smaller nibs or nuggets. Again, you should refer to the feeding instructions on the package. Once the dog food has been rehydrated it should be treated like wet dog food and not left out for more than 4 hours.