elaine's fish stew

Ingredients

• 1 - fennel bulb, green tops and core removed, white part chopped or 1 1/2 c. chopped white part of leeks
• 2 - onions, chopped
• 4 - garlic cloves sliced
• 3 tablespoons olive oil
• 1 1/2 cups riesling or other white wine
• 2 cups diced ripe or canned tomatoes
• 2 tablespoons fennel seeds
• 1/2 teaspoon hot pepper flakes
• 2 pinches saffron threads
• 3 - bay leaves
• 4 cups fish or chicken stock
• - s and p
• - zest of one orange
• 24 ounces assorted fish scraps: lobster, salmon, halibut, haddock, basa, cut into large chunks