The most common lentils are brown, but they may also be green, red and yellow. Lentils are not sold fresh; they are dried immediately after harvest. Store lentils tightly covered at room temperature and they will keep for up to a year.
Use any variety of fully cooked smoked sausage or kielbasa for this recipe.
To make All-Veggie Lentil Soup, omit the sausage and use vegetable broth.