Prepare beef and glass noodles.
Cut vegetables such as onion, carrot, spinach, and mushrooms into bite-sized pieces.
Boil and soak the glass noodles in advance.
Season the beef with soy sauce, sugar, sesame oil, and garlic, then stir-fry.
Stir-fry each vegetable separately with salt and sesame oil.
Add the glass noodles to the pan, season with soy sauce, sugar, and sesame oil and stir-fry.
Mix the meat, vegetables, and noodles together, stir-fry, and finish with a sprinkle of sesame seeds.