The article points out they were big in the late 1800s and early 1900s. Now, not so much.
I had one in old South St. Louis sometime before 1990 at a joint that opened in its then-current location in about 1925. As best I can determine today, the joint died around the turn of this century when the last of its owners & patrons all aged off this mortal coil.
Are we still waiting for BrainGlutton to contribute?
Arrgh, have you ever tried it? Properly cooked beef tongue has a wonderful texture, like a hot dog but fibrous, not at all slimy. Flavor tends to be kind meh, but that is what mustard (the dark deli mustard full of little brown seed things) is for.
Yes. The problem for me is exactly that, it is a slice of hot dog consistency, without the hot dog skin to bite through, homogenous. I appreciate that such is wonderful to you, but to me that texture, or really lack of texture, is creepy.
I like a bit more resistance in my mouth I guess, something to chew.
I’m not the only one who noticed that! 
I’ve never had brains, that I know of, but I’ve heard that they don’t have much flavor. It’s more of a texture thing, and you cook them with things, most commonly scrambled eggs. Since brain tissue is mostly cholesterol, they’re very fatty.
BTW, I was at a local independent butcher shop, and they keep their variety meats in a freezer separate from the counter. Among the items currently offered for sale are indeed brains, both beef and pork.
Sorry, I should’ve provided a link. It’s a classical reference.
No, I got it Ethilrist but, in homage to the typical “blinders on, just the facts” SD style, I found and linked to real data. My attempt at absurdity.
I’m from Southern Indiana and brains there are pretty common. Way back (meaning 30-40 years, though it’s still not super uncommon now), you’d scramble them with eggs for breakfast. In many restaurants, a cross-section of cow’s brain is served deep fried as a sandwich.
I’ve had the latter - as a sandwich - and it didn’t taste like much, but the knowledge that I was consuming a brain was very disturbing. It was like a savory, soggy funnel cake.
Telegraph article with offal puns.
Thanks for that update. I left long ago and always sort of wondered. It was THE after-hours joint for so many years.