01 -
Beat the egg white in a clean bowl until soft peaks form. Set it aside while you mix the batter.
02 -
Whisk the egg yolk, flour, baking powder, sugar, salt, and milk until smooth. Gently fold in the whipped egg white, keeping as much air in the batter as possible.
03 -
Heat half the oil in a nonstick skillet over medium heat. Cook 4 small pancakes for 2-3 minutes per side, until golden and set. Keep warm on a plate.
04 -
Divide the beef into 2 loose balls. Heat the remaining oil in the skillet over high heat, add the beef balls, and smash each one very thin with a sturdy spatula. Season with salt and pepper.
05 -
Cook the patties for 2-3 minutes, until the bottoms are deeply browned. Flip once, top each with cheese, and cook 1-2 minutes more until melted and the beef is cooked through.
06 -
Spread burger sauce on 2 pancakes. Add a cheesy patty and sliced pickles to each, then top with the remaining pancakes. Serve immediately with extra sauce if desired.