Ingredients :

12 mussels tightly closed
2 medium size onions, finely chopped
Juice of 3 key limes
1 tablespoon ají amarillo fresco / fresh hot yellow chili pepper, blended

Serves 4

Croutons for Soup:
4 1-inch cubes peasant bread
Extra-virgin olive oil
Pinch of salt

Mussel Soup:
4 teaspoons extra-virgin olive oil
2 teaspoons butter