Mussels and clams with mustard sauce.

Directions

1. Place all the ingredients except the shellfish and parsley, in a mortar and pestle or a blender and mash so that everything is well mixed.
2. Steam the mussels and clams (separately) in a little hot water, until the shells open. approximately 4 to 5 minutes.
3. Drain but keep half a glass of the water. Mix the water with the mustard sauces and pour over the shells.
4. Sprinkle on top some chopped parsley.