This is a very inexpensive soup, so splurge a bit and use French green lentils. You'll never go back. I splurged a bit more and used San Marzano tomatoes. I also diced up and fried two slices of center-cut bacon (which I pureed along with half the soup) just to give the soup a bit more depth. So it's not vegetarian but it is exceptional! Would serve to guests in a heartbeat.