For the lentil stew, peel and chop onions.
Wash the chard, remove the stalk and cut into strips.
Heat fat in a pot, cook onions in it. Add chard and cook briefly. Add lentils, pour in soup and bring to boil.
Cook for 10-15 minutes. Cut the smoked meat into small strips and add. Season with salt, pepper and vinegar and serve the lentil stew.