Go because you're a steak lover, and a big eater. The Betterfield still and by far, served affordable and extremely well cooked meat. That pink inside, and that charred outside certainly is enough without that extra homemade truffle mustard sauce. But if you like a variation of taste, have the meat with he sauce. It only enhance, and stretch your imagination.
PS; sadly it can only be said for the steak. You can pass on the rest of the menu.