Ingredients (serves 4):
In a small bowl, mix sugar, mirin and soy sauce. Set aside.
Peel potatoes and carrots. Cut into large bite-sized pieces.
Thinly slice the onion. Trim snow peas and cut in diagonals.
Slice beef against the grain to 1/8 inch thick bite-sized pieces.
Heat oil in a saucepan, add potatoes, sauté for 2 minutes over medium heat.
Cover with lid and cook for 15 minutes. Stir and check potatoes for doneness by poking the center with a toothpick.
When potatoes are tender, add beef, snow peas and mix to combine with other ingredients. Cook for another minute. Cover with lid, turn heat off and allow to continue cooking for about 3 minutes.
Serve family style in a large bowl.