I'm not entirely sure but I think that in Finland, since the outbreak of mad cow disease, brains and spinal cords of cow and sheep has to be burned - in the official food production chain, that is. As I'm completely outside all the regulation, I can do as I please, as long as I don't sell the meat =) I don't know what they do with pig brain - well but yes I'd guess there isn't a big market for them either...

Well, but I must say that I often feel slightly nauseous in the beginning of the butchering, so I haven't felt like trying to remove the brain (also, the stun gun often pierces the skull, and a mixture of blood and brain paste splashes out - that moment I always ask myself if eating meat is really worth all this stuff =) )