3 cups cooked potatoes, cut up (about 3 medium potatoes)
1/2 teaspoon salt
1/4 teaspoon white pepper
1 teaspoon prepared mustard
1 teaspoon Worcestershire
3 tablespoons parsley
1 cup seasoned bread crumbs
1/3 cup olive oil
2 tablespoons butter
Melt butter in a frying pan. Add onion and sauté for 5 minutes over low heat. Chop potatoes coarsely. Flake the cod flesh. Combine potatoes, salt and pepper, onion, eggs, mustard, Worcestershire sauce, and parsley.
Add the flaked fish and blend well. Spoon the mixture onto a baking sheet and smooth it over. Chill.
Shape the mixture into 12 round cakes. Coat the cakes with breadcrumbs.
Heat half of oil and butter in a skillet, and brown the cakes on both sides about 4-5 minutes per side.