Step 1

n a large saucepan, combine sweet potatoes, curry powder, lime zest, allspice, cayenne, and broth. Bring to a boil over medium-high heat. Reduce heat and simmer, stirring occasionally, for 25 to 30 minutes or until sweet potatoes are very soft.

Step 2

Working in batches, transfer soup to food processor (or use immersion blender in pot) and purée until smooth. Return soup to pan (if necessary) and whisk in 1 cup of the coconut milk and then the lime juice. Warm over medium heat, stirring, for 1 minute.

Step 3

Serve soup drizzled with remaining coconut milk. Sprinkle with cilantro and chiles, if using..