Talk about your inexpensive, good-smelling, sinus-clearing soup: this is a recipe from Soup by Williams-Sonoma, a book I turn to again and again for simple, accomplishable soup recipes. The first time I made their Carrot Soup with Ginger and Orange, I was expecting a healthy bowl, but one I'd more or less be forcing on myself (and others) for health's sake. Surprised we all were that this soup tasted rich . I'm not sure what magic ginger holds that makes it both clearingly light and duskily filling at the same time, but I like it. The orange zest also contributes to the richness, I think. A tip: buy a real-live orange for the juice and zest (zest is the colorful part of the fruit's skin--just grate the fruit shallowly, before you get to the white underskin). Prepared o.j. doesn't cut it in a soup with so few ingredients. Carrot Soup with Orange and Ginger (from Soup by Williams-Sonoma ) 3 Tablespoons olive oil 2 leeks, including tender green parts, thinly sliced (...