This is one of the easiest and yummiest beef dishes I ever did. I snagged the recipe from japanesefood.about.com.
Mix grated apple, soy sauce, ginger, garlic, sesame oil, and sesame seeds in a bowl. Marinate beef in the sauce for about 30 minutes. Heat vegetable oil in a large skillet on high heat and fry onion slices until almost softened. Add marinated beef and fry until cooked through. Adjust the flavor with some soy sauce.
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