The final result is a velvety smooth soup with surprising depth of flavor that doesn't mask the sweet potato or accentuate it's sweetness. Instead, this soup highlights the vegetable in a way that will change your mind about sweet potatoes — no matter what you think about them currently.
My relationship with this yogurt soup is a lot like that of John Cusack and Kate Beckinsale in the movie Serendipity (I'm Kate Beckinsale in this situation).
