Fakyes Xithati ( Sour Lentil Soup)

    1/2 l  Brown lentils                     1/2 dl Cold water
      2 l  Water                               1 tb Flour
    1/4 l  Finely chopped spring onions      1/2 dl Vinegar (or to taste)
      1    Garlic clove (opt.); crushed             Salt
    1/2 dl Finely chopped coriander *               Freshly ground black pepper
    3/4 dl Olive oil

  *Note: Finely chopped parsley may be substituted for coriander leaves.

  Wash lentils in several changes of cold water, or place in a sieve
  and run water through them.  Drain.

  Put lentils in a large pot with 8 cups water, spring onion, garlic if
  used, oil and coriander or parsley (or a combination of the two if
  preferred). Bring to the boil, cover pan and simmer on low heat for 1
  hour or until lentils are soft.

  Put water and flour in a screw top jar, seal and shake until
  thoroughly combined.  This prevents lumps forming.  Pour this
  gradually into boiling soup, stirring constantly, until thickened
  slightly.  Add vinegar and salt and pepper to taste.  Return to the
  boil, boil gently for 5 minutes, then serve hot.