Soups with this flavour are called "Beppe's Soup" by the Bakker clan.  Pake usually makes really small meatballs.  The delicious flavour is a combination of the Dutch meatball spice and the Honing brand Spring Vegetable Soup mix.  Maggi is also used to flavour it.  My version is a little different from Beppe's but it is the same basic taste.