i half suspect back in the day, the less well-off ate the brains as to not waste any part of the cow, whereas the wealthy enjoyed lasagna...this is kind of like a sinusoidal curve
Sounds like lobster meat. Servants used to insist they wouldn't have to eat it more than twice per week, and prisoners complained about it.
Cows and pigs brains are actually a traditional ingredient in some European countries. You can find it around here in those cheap old traditional restaurants.