Peel and finely dice the onions. Wash and finely dice the celery stalks. Peel and dice the garlic and potatoes. Heat the oil in a pan and sauté the onions, celery and garlic over a medium heat until soft.
 Add the potato cubes and soup and simmer for approx. 25 minutes until the potatoes are soft. Remove from the heat and roughly mash the potatoes with a fork. Stir in the herbs and simmer gently for a further 5 minutes. Flavour with salt and pepper.