Ah, spatchcocking. No, that isn’t something dirty (probably) and no, it’s not what they play with in Badminton. It’s a method of flattening out a whole chicken by removing it’s backbone so you can spread it flat across a grill so it cooks more quickly than leaving it whole.
I learned the essentials of technique and temperature from this link but used a very different mixture for the marinating process. Also note this is a recipe for grilling, so you will need either a gas or charcoal barbecue grill.
