Author Notes: This is a great soup to have in your everyday arsenal. It’s sweet, purely flavored, and can be made in a flash. The recipe came from Canyon Ranch, back when the Berkshires spa was little-known but expensive. Now it is just the latter. I think it's the perfect thing to serve the week after Thanksgiving, when you still crave the flavors but need a break from the heft. The recipe called for a red Rome or Delicious apple, neither of which I found tart enough. I changed it to Honey Crisp or Granny Smith. (less) - Amanda Hesser