Red cabbage, diced tomatoes, and lentils star in this delicious and nutrition-packed soup. Don't forget the splash of balsamic vinegar at the end- it takes it over the top!
Add onion and celery to bottom of heavy stock pot with enough water to barely cover. Turn heat to medium-high until onions and celery begin to cook and the onions are a bit more translucent.
Add carrots and garlic, allowing it to cook together a few more minutes. This allows the flavors to meld.
Add cabbage and stir well, adding more water (not enough to cover the ingredients, but to keep the bottom from sticking).
Add diced tomatoes WITH the juice. This is part of the secret sauce that makes it delicious.
Rinse lentils while everything is cooking together. Add lentils and stir.
Add bay leaf, and enough water to cover.
Turn heat to high until soup is boiling, then turn down to low. Allow soup to simmer for 30 minutes or until carrots are tender and lentils are cooked through.
Before dishing, add balsamic vinegar to soup pot and stir well.
Serve hot. Leftovers keep well for up to 3 days, refrigerated in a covered container.