This recipe is from *Stroganov to Strudel* (Great Traditional Cooking From Germany, Austria, Hungary & the Czech Republic). Per the intro, "Soups are a favourite in this area, served either as a main meal or a starter. Hearty soups range from creamy Czech soups w/light dumplings, to the famous fruit soups of Hungary & chunky soups of Germany, such as *Lentil Soup* containing sliced frankfurter." If your kids are not entirely opposed to veggie-based soups, then the sight of frankfurter slices may well tempt them to happily eat this healthy soup as a 1-dish meal. (Nearly all the time given is cook time, but I also allowed 15 min for ingredient prep). *Enjoy* !