A fascinating blend of flavorings add intrigue to asparagus and beef, while ramen noodles bring speed.
In cup, mix soy sauce, vinegar, hoisin sauce, brown sugar, ginger, 2 teaspoons sesame oil, the cornstarch and red pepper flakes. In medium-size saucepan, bring water to a boil. Add noodles with only one of the seasoning packets, the scallion and the remaining 1 teaspoon sesame oil. Remove from heat; let stand, covered.
In large skillet, heat 1 tablespoon vegetable oil over medium heat. Add sirloin and garlic. Stir-fry for 3 minutes. Remove beef. In same skillet, heat remaining 1 tablespoon vegetable oil. Add asparagus; stir-fry for 2 minutes. Stir soy sauce mixture. Add beef and soy sauce mixture to skillet. Stir-fry about 1 minute or until thickened. Sprinkle with sesame seeds. Serve with noodles.