Preheat the oven to 180 C / Gas 4. Grease a large roasting tin with oil and set aside.
In a large bowl, mix together the beef, 3 sticks of celery, grated carrots, apple, eggs, bread, oats, wheatgerm and tomato concentrate using your hands. Divide the meat mixture into four equal parts and make loaf shapes. Place the loaves in the roasting tin. Surround them with the potatoes, remaining carrots and remaining celery. Cover the tin with a lid 9or with tin foil).
Bake for 80 minutes in the preheated oven, or until the meat is cooked through and no longer pink in the centre. The internal temperature should be 80 degrees C when tested with a meat thermometer. Remove from the oven and allow to cool.
Portion the food into containers with one loaf and one quarter of the vegetables in each one. Store in the fridge. To serve, give your dog 1/3 of a container with each portion of dried food.
You can also portion out the meat loaves into muffin tins as seen in the photo. If you do this cooking time will need to be reduced to about 40 minutes.
A balanced diet
Supplement your dog's food with the correct ratio of calcium to phosphorous in addition to varying protein sources (including organ meat), fresh fruits and vegetables. It is also good practice to provide a daily multivitamin to dogs along with omega-3 fish oils and a pro-biotic. The following are toxic to dogs even in small amounts: onions, avocados, chocolate, macadamia nuts, garlic, grapes, raisins, apple pips and yeast dough.