Start by cutting up two pieces of bacon and cook them until almost brown in a large soup pot.
Cut up the following vegetables:
1 small piece of celery root ( can omit )
2 celery stalks
add vegetables to the rendered bacon and cook until slightly browned.
Add 1 Bag of lentils and 2 quarts of chicken stock.
Cook until lentils are done (about 20 min.) Add salt and pepper & Vinegar (German) to taste. Add 2 cut up potatoes after 10 min. of cooking. (Vinegar can be purchased from Ditmers in Los Altos, or ordered online. )
Once lentils and potatoes are tender add one cut up Polska Kielbasa sausage for taste. One can also mash some of the potatoes a little which adds a little more body to the soup, but do so before adding the sausage. Another tip is to add a few sautéed diced onion until brown and top off soup. We make German crepes with apple sauce with this soup. Bon Appetite :)
To see images step by step : http://www.walk4jc.com/walk4JC/My_Recipes/Entries/2011/12/29_German_Lentil_Soup.html