Rinse lentils. Bring 1 cup lentils and 2 1/2 cups water to boil. Cook covered at simmering until tender, about 35 minutes. When cooked, lentils double in volume. One cup dried lentils will yield about 2 cups cooked lentils.
Rinse lentils; drain. Place in large soup kettle with remaining ingredients. Cover and simmer about 2 1/2 to 3 hours. 6-8 servings.