To make dinner for 4, cut 3/4 pound (340g) cooked steak into bite-size pieces, chop 4 scallions, and mince a large clove of garlic. Heat 1 tablespoon vegetable oil in a large skillet or wok over medium-high heat. Add 3 drops toasted sesame oil, the garlic, and half the scallions, and cook for 30 seconds. Add 2 2/3 cups (425g) cooked farro (or substitute other cooked grains like barley or rice) and heat through, stirring well. Add the steak and 1 tablespoon soy sauce and stir through. Serve with the remaining scallions on the side. Pass soy sauce and Sriracha at the table. This is a good time to add any lingering arugula or herbs— even fry an egg for the top.