Loup de Mer et Moules Pistou

Ingredients

• 3 pounds wolffish -- (loup de mer), wolf of the sea -- filets
• 36 each mussels, rope cultured--washed & trimmed
• 1 1/2 cups Spanish onions--diced fine
• 1 1/2 cups leeks--julienne
• 18 tomatoes--red pear--whole
• 18 tomatoes--yellow pear--whole
• 1 tablespoon garlic--chopped
• 1 1/2 teaspoons saffron threads--crumbled
• 3/8 cup extra virgin olive oil--French
• 1/4 cup parsley--chopped Italian
• 1 tablespoon coarse salt--kosher
• 1 1/2 cups fish stock--double strength
• 1/4 pound butter--unsalted
• 3/8 teaspoon white pepper--ground