Back when I was a youngster tacos de sesos, made of brains, whether lamb, pork, or cow/calf were inexpensive and delicious. Then came the BSE (bovine spongiform encephalopathy) scare, and brains vanished from the meat markets. BSE is a serious disease that causes the brain of a cow to deteriorate by creating holes in it leading to degeneration in mental as well as physical functions and finally death. Humans may be infected by BSE if they ingest the brain or spinal cord of an infected cow. The human form of the disease is called Creutzfeldt Jakob disease (CJD).

Now I see brains are making a slow comeback, albeit a pricey one, so does that mean my beloved brain tacos are safe to eat again? (Aside from the cholesterol overload that is)

Does anyone have any info or advice?

Scares come and go. Brains are common around the world, and I think that nose to tail eating concepts have 'brought them back' again for places that they aren't part of the daily eating as much as they are in other places.

My suggestion is to find a good butcher. Build a relationship with a butcher and find out where they get their meat, etc. A respectable butcher should be getting their meat from farms that treat their animals well, and use responsible farming practices.