Step 1

For the Chicken: Place chicken in Dutch oven or large soup pot. Add onion, pepper, garlic, sour orange, culantro, mint, water, salt, and black pepper. Bring to a boil over high heat. Reduce heat to medium-low and simmer, skimming surface occasionally, until chicken is cooked through, about 15 minutes. With slotted spoon, transfer chicken to large plate. When cool enough to handle, use paper towels to remove chicken skin; discard. Shred chicken finely.

Step 2

Strain broth into large bowl. Discard solids and return broth to Dutch oven.

Step 3

For the Chicken Meatballs: Place onion, bell pepper, and cloves in bowl of food processor and pulse until mixture is a fine paste. Melt butter in large skillet over medium heat. Add onion mixture and annatto and cook, stirring occasionally, until most of the liquid has evaporated, 5 to 7 minutes. Transfer to large bowl.

Step 4

Add corn masa mix, 1 teaspoon salt, 2 cups strained broth, culantro, mint, sour orange juice, and half the shredded chicken. Stir until thoroughly combined. Shape a single 1/2-inch ball of dough. Bring broth to simmer over medium-low heat. Cook meatball until it floats to surface and taste. Add salt to masa mixture if needed.

Step 5

Shape dough into 1 1/2-inch balls and add to simmering broth. Cook until meatballs float to surface, 6 to 8 minutes. Return remaining shredded chicken to broth to heat through. Divide meatballs among bowls and ladle broth over. Serve, garnished with cilantro and mint.