Rare Cut Misuji Steak (Top Blade) with Japanese Onion Sauce

<Misuji> A rare cut from the shoulder area, with only a few kilograms obtainable from a single cow. The secret to its delicious flavor lies in the "sashi" (marbling) created by the perfect balance of lean meat and fat. *Approx. 150g before cooking. *The number of cut slices varies depending on the shape of the steak.