The breastbone of the chicken is removed, and the chicken is flattened before cooking to expose maximum surface area to the grill.
Trim the fat and remove the wishbone as described. Do not remove the wings. Remove the backbone by cutting down each side of the backbone with a heavy knife, through each side of the cavity of the chicken.
Make a small incision in the skin between each leg and breast tip and insert the end of each drumstick into each incision.
Remove the keel bone.
Place the chicken in a container and marinate in oil and seasonings.