"Create a saucy, spicy Asian-style beef and vegetable stir-fry/dish using 340 g 28-day mature fillet steak, fresh spring onions, sprouting broccoli, bean sprouts, red pepper, fresh chillies, garlic, ginger, and green beans. Do not use black bean sauce. Prefer savoury sauces like oyster sauce and not overly sweet. Make it suitable for 4 servings. Use metric units only. Include a balanced, flavorful sauce and keep the recipe practical for an advanced home cook with standard kitchen equipment. Focus on tender beef, quick-cooked vegetables, and a glossy sauce."