Toast the cut sides of the bun on the grill.
Grill the patty. Add the cheese on top in the last minute and let it melt slightly.
Fry the frozen chips straight from frozen at 175°C until golden and crisp. Season with table salt as soon as they come out.
Spread burger sauce on both bun halves.
Build the burger: lettuce on the base, patty with cheese, then onions and pickles on top, and the bun lid.
Plate with the chips alongside and serve immediately.

