Spicy Sweet Potato and Coconut Soup

INGREDIENTS

• 1 1/2 pounds orange-fleshed sweet potatoes
• 1 tablespoon vegetable oil
• 1 onion, chopped
• 1 (2 inch) piece fresh ginger root, thinly sliced
• 1 tablespoon red curry paste
• 1 (15 ounce) can unsweetened coconut milk
• 3 cups vegetable broth
• 3 1/2 tablespoons lemon juice
• 1 teaspoon sea salt
• 1 tablespoon toasted sesame oil
• 1/2 cup chopped fresh cilantro