Sweet Potato and Kale Soup

Heat oil in a large stockpot over medium-high heat. Add onion and garlic and saute for 2 minutes. Stir in turmeric, coriander, curry powder, and coriander. Add sweet potatoes; saute for 2 to 3 minutes, stirring frequently. Pour in broth and bring to a simmer. Cover and simmer until sweet potatoes have just begun to soften, 8 to 10 minutes. Stir in kale and chick peas; simmer for 5 minutes more. Stir in coconut milk and adjust salt to taste.