- 2 tablespoons cooking oil
- 2 ribs celery, chopped
- 1 large onion, chopped
- 1 carrot, chopped
- 2 1/3 cups lentils
- 1 (15 ounce) can drained canned diced tomatoes
- 2 1/2 quarts water, more if needed
- 4 teaspoons dried summer savory
- 1 bay leaf
- 1 3/4 teaspoons salt
- 1/4 teaspoon fresh-ground black pepper
- 1/2 pound kielbasa or other smoked sausage
- In a large pot, heat the oil over moderate heat. Add the celery, onion, and carrot and cook, stirring occasionally, until the onion is translucent, 5 to 10 minutes.
- Add the lentils, tomatoes, water, dried savory, if using, bay leaf, salt, and pepper. Bring to a simmer. Reduce the heat and cook, partially covered, until the lentils are tender, about 40 minutes.
- Meanwhile, heat a large nonstick frying pan over moderately high heat. Add the sausage and cook, turning, until browned, about 3 minutes in all. Remove. When the sausage is cool enough to handle, cut it crosswise into 1/4-inch-thick slices.
- Stir the sausage and fresh savory, if using, into the soup and simmer it for 5 minutes longer. Remove the bay leaf. If the soup is too thick for your taste, thin it with additional water.