In a small saucepan, fill enough water to blanch the vegetables. Bring to a boil. Once boiling, add in carrots and cook for 1-2 minutes, then add green beans to cook another minute. Cooking time may vary depending on the amount and thickness of veggies. Drain well and set aside.
Place a slice of meat on the cutting board, and sprinkle salt and pepper. Then put green beans and carrots on one end of the meat and start rolling them up.
Combine all the ingredients for Teriyaki Sauce.
In a frying pan, heat oil on medium high heat. When it’s hot, place the steak rolls gently with the seam line facing down. Cook one side of steak rolls until nicely charred, then rotate to the next side.
Once all sides of the meat have nice char, reduce the heat to medium and add sake. Cook covered till sake is evaporated.
Add the Teriyaki sauce and rotate the steak rolls so they are evenly coated with the sauce. Transfer the steak rolls to a serving plate.
Reduce the Teriyaki Sauce in half, or until it's thickened. Pour the sauce on the steak rolls and serve immediately.