Shellfish Boil

6 tablespoons coriander seeds

1/4 cup whole allspice seeds

1/4 cup dill seeds

2 teaspoons whole cloves

12 small dried red chilies crumbled, or 1 tablespoon crushed red pepper

16 bay leaves

8 quarts water

1 dozen small new potatoes , scrubbed

2 large onions, unpeeled, cut in half crosswise

2 lemons, halved

1-1/4 cups plus 1 tablespoon salt

1/4 cup plus 1 tablespoon cayenne

1 large head garlic, cut in half crosswise

1 pound andouille sausage , cut into 1 inch pieces

4 ears fresh corn, shucked and cut into thirds

2 pounds crawfish

5 pounds crabs, such as dungeness, blue, stone, king or snow crabs

2 (1 pound) lobsters

2 pounds shrimp, peeled and divined

2 dozen littleneck, steamer, razor, Pacific littleneck or Manila clams

1 cup melted butter, warm

2 tablespoons finely chopped parsley