Don’t save your fruit for dessert—a fruit and vegetable soup makes a wonderful beginning to a meal. Granny Smiths are just right for this recipe as they are not too sweet.
Heat the butter in a medium saucepan, add the onion, cover with buttered greaseproof paper and a lid and cook gently until the onion is transparent, but not coloured. Add the celery, parsnip and apple and season with salt and pepper. Cook for a few minutes, then add the bouquet garni and cover with the chicken stock.