The smart ass answer is very close to the truth. Remove and toss anything you don't care to eat.You can get the membrane off the neck and the outer labia with a fast dunk in very hot water. I remove the dark end of the neck, and all the guts asd welll as the dark lining of the meat that protrudes from the shell AKA clam labia. When done you will have one hell of a lot less than you began with, but you should have all nice clean meat.
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No huevos no pollo.