I made this soup for passover and everyone loved it! My husband told the guest that this was probably similar to the soup that Jacob made and Esau sold his birthright over. One of the people there said, "I can see why." Will be making again very soon!! I couldn't find any fennel and I didn't put red onion in it.
I've made this soup several times now and it is absolutely wonderful. The local store doesn't carry fresh fennel but I really don't miss it. Serve with crusty french bread and a glass of good table wine, that's my idea of comfort food.