Sweet Potato Soup with Ginger

Ingredients

• 1 large yellow onion, diced
• 1 tablespoon extra-virgin olive oil
• 1 tablespoon finely grated fresh ginger
• 1/2 teaspoon ground cumin
• 1/8-1/4 teaspoon cayenne pepper
• 1/2 teaspoon sea salt, plus more to taste
• 2 1/2 pounds red-skinned sweet potatoes, peeled and cut into large dice
• 4 cups low-soduim chicken or vegetable broth
• 1 (14 ounce) can coconut milk
• Juice of 1 small lime
• Fresh cilantro leaves, for garnish