Fry K&N's Burger Patties as per instructions on pack.
Meanwhile, sauté onion rings in a separate pan.
Assemble burger by layering the fried patty with lettuce, tomato slices, gherkins, sautéed onion rings and a slice of cheese on the burger bun with a large dollop of garlic mayonnaise sauce.
Serve with fries and coleslaw.
Blend mayonnaise, crushed garlic, lemon juice and olive oil in a small bowl into a smooth paste. Season with salt and pepper.