Marinate the beef

• Slice the beef thinly and place in a bowl.
• Mix with part of the soy sauce, sugar, sesame oil and minced garlic.
• Let it marinate while preparing the vegetables.

Blanch the spinach

• Boil water in a stockpot and blanch the spinach briefly.
• Drain and rinse under cold water, then squeeze out excess water.
• Season with a little salt and sesame oil.

Cook the noodles

• Boil the glass noodles in water until soft and chewy.
• Drain and rinse, then cut them with scissors into shorter lengths.
• Toss with a little sesame oil so they don't stick.

Stir-fry the vegetables

• Heat oil in a frying pan and stir-fry the onion, carrot and shiitake mushrooms separately until just tender.
• Season lightly with salt and set aside.

Cook the beef

• Stir-fry the marinated beef in the hot pan until cooked through.

Combine and season

• In a large bowl, toss the noodles with the remaining soy sauce, sugar and sesame oil.
• Add the vegetables, beef and spinach and mix well with tongs.
• Sprinkle with toasted sesame seeds and serve.