How to Make It
In a large heavy pot, heat the olive oil over medium high heat, then stir in the onion and cook until golden, about 6 minutes. Stir in the garlic and cook, stirring occasionally, until golden, about 3 minutes. Stir in the tomatoes and cook until softened, about 4 minutes. Stir in the coconut milk, stock, 1 teaspoon of salt and 1/2 teaspoon of pepper and bring to a boil. Simmer the liquid until reduced slightly, about 4 minutes.
Stir in the mussels and cover the pot. Boil until the mussels have opened wide, 6 to 8 minutes. Uncover the pot, stir in the squid tentacles and simmer until the tentacles are just cooked but still very tender, 1 to 2 minutes. Stir in the lime juice and season with salt and pepper to taste. Sprinkle with the cilantro and drizzle with the dendê oil, then serve.