To make the sausage rolls, heat the sunflower oil ... salt and sage and mix well. (Check the seasoning by frying a small amount of the mixture until cooked through. Taste and adjust as necessary.) ...
Add the celery, apples, garlic, and poultry seasoning, and cook for 3 to 5 minutes, stirring often. Add the apple-vegetable mixture to the bowl of sausage, along with the bread; mix well.