Make dipping sauce first by mixing the two ingredients together and cover with plastic wrap. Refrigerate until ready to use.
Pat dry fish and chop into small fine pieces and place in a medium mixing bowl.
Finely chop scallion and add to bowl.
Add in egg, cheese, breadcrumbs and salt and pepper.
With damp hands, shape fish mix into 1/2 inch thick patties. Makes 6 burger sized patties.
These can be made smaller if you are using them as an appetizer.
Melt butter in a non-stick skillet on medium heat.
Add fish cakes and cook for 5 minutes.
Turn fish cakes over and cook for an additional 5 minutes.
Place fish cake on a whole wheat kaiser roll and top with lettuce, tomato and some dipping sauce instead of mayo.
Serve hot with dipping sauce on the side.