Hamburgers

INGREDIENTS
450g (1lb) lean minced steak
1⁄2 onion, very finely chopped
1 egg yolk
salt and freshly ground black pepper
olive oil or sunflower oil
4 sesame seed buns, cut in half and lightly toasted

METHOD
Place the minced beef and chopped onions in a mixing bowl, add the egg yolk, season to taste with salt and pepper, and mix well.
Divide the mixture into 4 equal portions and, using wet hands, shape them into 4 burgers.
Preheat a ridged grill pan or grill on its highest setting. Lightly oil the ridged grill pan and grill the burgers for 3 minutes on each side, or longer if you prefer.
Serve in toasted sesame seed buns with your favourite toppings.