First make a small (about 4-6 inches), thin (about 1/4 inch) beef patty. Put a couple of slices of cheddar cheese on top. This is half of your beef core.
Cover the cheese with another small, thin layer of beef. Form this into a patty.
Cover this patty on all side with ground turkey.
Season with soy sauce, worcestershire, herbs de provence, salt and pepper. Heat a pan over medium high heat.
Cover the pan with a bowl or grill cover and allow to cook for about 3 minutes.
Flip and repeat the process on the other side but only for two minutes.
Throw you're favorite cheese on top, cover and cook for one more minute.
Serve on a bun with all the regular burger fixings.
