Collar – boneless.
The Presa/Denver and the remaining rib eye muscles are removed from the collar. The remaining muscle is butterfly-cut into a chuck spatchcock.
Follow the natural seam to separate the two main muscle blocks of the collar as illustrated.
The top of the collar (A) and the Presa (Denver Muscle) (B).
The top of the collar contains the Chuck Eye which is the continuation of the Rib Eye.
The Chuck Eye is removed from the top of the collar
leaving the remaining Chuck Joint.