4Coat the cod in plain flour, then dip into the batter.
5Heat oil in a pan over medium heat, ensuring the oil temperature is between 175°C and 190°C.
6Gently lower the cod into the oil, cooking for 4-5 minutes on each side until golden and crispy.
7Repeat with onion rings.
8Mix mayo, chopped pickles, fresh dill, garlic powder, onion powder, salt to taste, pickle juice, lemon juice, and Dijon mustard for the tartare sauce.
9Toast buns, add cheese, tartare sauce, fried fish and more sauce. Top with the bun.