I have recently starting raising my own chickens and processing them and regardless of what I have done during cooking the chicken is super tough. I thought I read somewhere that fresh chickens can be more tough if they don't sit and breakdown after processing before you freeze them but even that doesn't seem to help. Any idea on what i can do to make the chicken more tender? The chickens I raise are pasture raised and are young, about 10-12 weeks when butchering so they are not old chickens. Any help or suggestions would be great! Thank you!