
Slice the steak very thinly against the grain (15 minutes in the freezer makes this easier).
Stir together the tamari, grated ginger, garlic, sesame oil and rice vinegar.
Sear the beef in batches in hot oil in a large skillet over high heat, 1-2 minutes per batch; set aside.
Toss the zucchini noodles in the hot pan for 2 minutes just to warm through, then return the beef and pour in the sauce, tossing 1 minute.
Top with sesame seeds and green onions and serve right away so the noodles don't get watery.
Photo: DinnerDrop