Toss in the ginger, minced garlic, soy sauce, water, brown sugar, carrots, and green onions to the bag.
Remove excess air, seal, and freeze.
Heat in skillet over medium.
Whisk 1/3 cup cornstarch into the sauce as it cooks.
Cook until beef is cooked. (about 5 minutes)
Serve over rice. Sprinkle with some sliced green onions
*If you can't find the beef cut into strips already, you can ask the butcher at your grocer to slice some flank steak for you or you can slice it yourself against the grain. You can substitute sirloin steak for flank steak if you prefer.