1 onion
1-2 cups carrot and/or beet juice
several cups water
some cilantro, chopped (optional)
1-2 Tbsp flavored vinegar (optional, today I tried riesling raisin)
rinse the lentils. add everything together, cook it all up for an hour or so. at the end, turn off the heat, add the cilantro and vinegar if desired.