Peel and wash the carrots and celery and cut them into small cubes. Cut the leek in half, wash and cut into small cubes. Wash the lentils. Peel and finely dice the onion. Heat oil in a pot.
Sauté carrots, onions, lentils and celery for 1-2 minutes, then deglaze with vinegar. Add stock and simmer for 10-15 minutes until the lentils are soft. Add the leek after about half the cooking time.
Cut salami slices in half lengthwise. Wash and quarter the pear and remove the core. Cut pear quarters into 3 slices each. Wrap 1/2 salami slices around each pear column and put them on a small wooden skewer.
Season soup with salt, pepper and possibly a little vinegar. Arrange the soup and serve with the pear wedges.