Lentil Soup - With poultry

1/2 cup brown lentils 1/2 cup red lentils 4 cups water 2 potatoes, peeled and quartered 1 stalk celery, finely chopped 1 carrot, finely chopped 3 tablespoons[...]

3 tablespoons olive oil 1 large onion, chopped 2 cloves garlic, minced 1 tablespoon tomato paste 1 teaspoon ground cumin 1/4 teaspoon kosher salt, or to taste[...]