Step 1

Add the butter, raw scallops and shrimp to a food processor with parsley, bread crumbs, garlic powder, and lemon zest, and pulse to chop coarsely. Transfer to a mixing bowl and add mango, mayonnaise and Parmesan. (If necessary, add more mayonnaise to bind patties.) Season, to taste, with salt and pepper. Form into 2-inch patties.

Step 2

Heat the oil in a saute pan over medium heat and sear both sides of the seafood cakes, until golden brown. Leave each side undisturbed for about 2 minutes to allow the surface of the patty to set up and therefore avoid breakage.

Step 3

Serve with a dipping sauce made of the creme fraiche and sour cream which has been whisked together.