b'YOU WILL NEED2 pounds fresh mussels 4 tablespoons olive oil cup finely chopped onion4 cloves garlic, thickly sliced1 cup sparkling white wine 1 tablespoon curry powder tablespoon turmeric (Optional; see Chefs Tips.) teaspoon red pepper flakes (Optional; see Chefs Tips.)1 tablespoon finely chopped lemon zest (zest from 1 large lemon)2 cups peeled white potato, cut in -inch dice (about 1 pound)3 cups clam juice 1 cup cream teaspoon salt teaspoon freshly ground black pepper2 tablespoons minced fresh parsley'