Stir-Fried Beef with Green Asparagus

Ingredient Preparation:
Steak: Use a meat mallet to pound the steak to a thickness of 0.5 cm on both sides. Cut the outer connective tissue.
Asparagus: Trim the tough ends and cut into 8-15 cm long segments.

Marinating:
Vegetable Marinade:
Blend 20g celery, 20g onion, 10g red bell pepper, 10g green bell pepper, 10g carrot, and 25g purified water in a food processor. Strain the juice and marinate the steak in it for 20 minutes (discard any excess juice after marinating).
Transfer the steak to another container and add the seasoning (2g cornstarch, 10g light soy sauce, 1g dark soy sauce, 5g oyster sauce, 3g crushed pepper, and 30g peanut oil). Marinate for 5 minutes (adjust seasoning for larger portions).

Simplified Marinade:
Transfer the steak to another container and add the seasoning (2g cornstarch, 10g light soy sauce, 1g dark soy sauce, and 5g oyster sauce).

Cooking Preparation:
In a separate small bowl, toss the asparagus with 15g oil until evenly coated.
After marinating, place the steak in the cooking container and arrange the asparagus beside it.
Place the container in the oven and start cooking.

Serving:
Once cooked, remove and serve immediately.