I found this recipe on canada.com, and it's from chef Massimo Capra's book One Pot Italian Cooking. He called it Gamberi e Fagioli. I used much, much more tarragon and a bit more fennel than what is called for in the recipe and found it had a great level of flavour - I don't think I would have liked it as much with the amounts in the recipe, but I left them as is so you can make your own decision. I served over angel hair pasta. Since there is no sauce, just broth, I made sure to ladle lots of broth over the noodles to give them flavour. The broth is pretty tasty so it turned out okay, I think!