I’ve given details on preparing tongue a couple times (here for buffalo, here for pork). This corned beef tongue was brined with curing salt and lots of pickling spice. As you can see in the picture, the tongue has some insanely thorough fat marbling. It actually looks a bit like Wagyu beef! Fantastic sandwich…
Looks like ham. I bet tongue served this way is well received even y those squeamish about tongue.