African Tomato & Peanut Soup

This was a Nadia find back from my Rochester days. It's a very full soup and I looooove it.

1 Tbs canola oil
1 large onion chopped
2 garlic cloves minced
2 tsp minced fresh ginger
1 1/2 tsp ground cumin seeds
1 1/2 tsp ground corriander seeds
1/2 tsp ground cinnamon
1 pinch ground cloves
3 ripe medium tomatoes, chopped (or 1 can)
2 large (about 1 1/2 pounds) sweet potatoes
1 carrot coarsely chopped
4 1/2 cups water
1 tsp salt
1 pinch cayenne
2 Tbs peanut butter
1/4 cup chopped dry roasted unsalted peanuts
1 Tbs chopped cilantro

Brown the onion in the oil. Add the garlic, ginger and spices and simmer for another 3 minutes. Add tomatoes, sweet potatoes and carrots and cook for another 5 minutes. Dump into a blender and puree. Return to large cooking pot. Add water, salt, cayenne and peanut butter and bring to a boil. Serve and top with chopped peanuts and cilantro. Mmmmm mmm.