800 g rib eye (1.76 pounds) or top sirloin (or any tende thinly sliced, 2mm to 3mm (1/8 inch) thickness 1 onion (130 g / 4.6 ounces), optional, peeled and thinly sliced 2 stalks green onion (55 g / 2 ounces), optional, thinly sliced 1/2 carrot (55 g / 2 ounces), optional, peeled and thinly sliced 1 tbsp toasted