Beef short ribs; ox tail. Or better yet, short ribs AND ox-tail braised together.
Calf's liver, cut thick, seared and cooked medium rare. Served over creamed spinach = a plus.
1 1/2" thick ground sirloin, hard sear, very rare inside.
Sweetbreads, crispy seared, custardy inside.
Rib cap, cooked medium.