Easy Stir Fried Beef With Mushrooms and Butter Recipe

Name: Easy Stir-Fried Beef With Mushrooms and Butter Recipe
Ingredients: 1/2 pound flank steak, sliced about 1/8 inch thick; 1/4 teaspoon salt; 1/4 teaspoon sugar; 1/8 teaspoon ground black pepper; 1/2 teaspoon Shaoxing wine; 1/2 teaspoon soy sauce; 1 teaspoon plus 3 tablespoons vegetable oil, divided; 1/2 teaspoon cornstarch; 1 ginger piece, sliced quarter inch thick; 1/2 pound mix variety of mushrooms, sliced about a quarter inch or more thick; 2 teaspoon soy sauce; 1 tablespoon butter; 2 medium cloves garlic, finely minced (about 1 teaspoon); Steamed white rice, for serving