Carrabba's Spicy Sausage Lentil Soup

    1 tablespoon olive oil
    1 onion, chopped
    4 celery stalks, sliced
    6 oz. smoked sausage (such as kielbasa), coarsely chopped
    4 cups chicken or vegetable stock
    4 cups water
    2 cups green lentils
    1 strip (3 inches long) orange rind
    1 teaspoon crumbled dried marjoram
    1 teaspoon crumbled dried savory
    3 carrots, peeled and sliced
    2 potatoes, peeled and diced
    salt and pepper, to taste

In large heavy saucepan, heat oil over medium heat; add onion and cook for
5 minutes, stirring occasionally. Add celery and sausage; cook for 5 minutes,
stirring occasionally.

Add stock, water, lentils, orange rind, marjoram and savory; bring to boil.
Reduce heat, cover partially and simmer for 30 minutes. Add carrots and
potatoes; cover partially and simmer, stirring occasionally, for 35 minutes
or until lentils are tender. Discard orange rind. Season with salt and pepper
to taste.