Add some salt and a bouquet garni of some bay leaves, lemon wedges and black peppercorns to a pot of boiling water. Add the cod fillets and boil for 10 to 12 minutes. Remove the cod from the water and refrigerate for 1 hour.
Boil the potatoes in plenty of salted water until tender. Drain, mash and cool completely.
Pan-fry the onions in a little bit of canola oil until soft. Set aside to cool.
In a large bowl, mix together the chilled cod, mashed potatoes, fried onions, sour cream, chives, mustard, scallions, Worcestershire sauce, Old Bay seasoning, garlic powder, white pepper and 1 tablespoon salt. Add the breadcrumbs and mix to combine. Form the mixture into 4-ounce cakes.
Heat some oil and 1 tablespoon butter in a large skillet over medium-high heat. Pan-fry the cakes in batches until golden brown, 3 to 4 minutes per side; add some additional oil and butter between batches as needed.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Lee Pinto, Yankee Lobster, Boston, MA