Place the meats in a bowl and give a good mix before adding the breadcrumbs, diced onion, seasoning and Worcestershire sauce to the bowl.
Then start to mix by hand,you are looking for the mixture to become sticky, and it will stick to yourhand if you lift it above the bowl.
This is your burger meat all made now and ready for shaping.
Divide into four large burgersor if you like a double stack divide into eight.
For the best finish use aburger press but for a more rustic look shape you’re your hands. Refrigeratetill required.
Season the patties with plenty of salt and pepper before pan-frying in a searingly hot pan till cooked - 2-3 minutes each side, don’t overcook or the burger will be dry.
To build your burger split the bun into three across-ways and toast.
Spread one tbsp of Big Mac burger sauce over the base of the bottom and middle slice.
Add the chopped onion between the two bases, a handful of lettuce and top with 3-4 slices of gherkins.
Place another patty and then a slice of cheese. Place the next patty on and then the lid.
Pop back into the pan and cover with a lid and slightly steam to melt the cheese and heat the burger bun.