Yosef Karo, Translation:Shulchan Aruch/Yoreh Deah…
“ Contains one Seif.ובו סעיף אחד: 1 Poultry or goats that are filled with meat that was not salted are permitted if they are roasted, even if the mouth is facing upwards (1) [1] and even if the outer part was salted (2) for as it absorbs blood from the filling so will it release. Rema: [2] Of course if the inner part was salted and not the outer part it is permitted as well, for the flame draws out blood from the outside without it being absorbed in the inside. For cooking, it is forbidden [3] until salting (3) is performed on the outside on its own and in the inside on its own. ”
