SPICY SWEET-POTATO SOUP

Spicy Sweet-Potato Soup image

Provided by Martha Stewart

Number Of Ingredients 14

1 1/4 teaspoons ground cardamom
1 teaspoon ground turmeric
3/4 teaspoon ground cinnamon
1/3 teaspoon chili powder
1 tablespoon unsalted butter
1 tablespoon olive oil
2 leeks, white and pale-green parts only, roughly chopped, washed well (1 cup)
1 large onion, cut into 1/4-inch dice
4 sweet potatoes, cut into 1/2-inch dice
1 butternut squash (about 1 1/2 pounds), cut into 1/2-inch dice
2 carrots, cut into 1/2-inch dice
3 quarts Basic Chicken Stock for Chicken and Kale Soup
Coarse salt and freshly ground pepper
Radish sprouts, for garnish (optional)

Steps:

Combine spices in a small bowl. In a medium saucepan, heat butter and oil over medium heat. Add leeks and onion; cook until translucent, about 8 minutes. Sprinkle with spices; add sweet potatoes, squash, and carrots. Stir well to combine.
Add chicken stock to the mixture in the saucepan, and simmer over low heat, partially covered, until vegetables are tender, about 40 minutes. Season with salt and pepper. Remove from heat.
Transfer half the soup to a blender, working in batches, if necessary, so as not to fill jar more than halfway; process until smooth. Return puree to saucepan; place over low heat until heated through. Serve hot; garnish each bowl with a handful of radish sprouts, if using.