Hudutu (Fish and Coconut Stew with Mashed Plantains)

Ingredients

• 2 pounds kingfish skin-on, or swordfish filets
• kosher salt
• ground black pepper
• 1/4 cup fresh lime juice
• 2 teaspoons ground cumin
• 5 cloves garlic minced
• 6 green plantains plus 2 ripe plantains, peeled and cut into 2" pieces
• 7 cups coconut milk
• 1/2 teaspoon annatto seed ground, available at Spicesforless.com
• 6 sprigs culantro or cilantro, chopped
• 4 basil leaves large, chopped
• 1/2 yellow onion small, minced