Stir-fried Beef With Asparagus And Snow Peas

• 2 green onions
• 2 arrowroot powder
• 450 gr sirloin steak fat trimmed (lean)
• 270 gr asparagus
• 200 gr trimmed snow peas (whole)
• 65 gr bell pepper (red julienned)
• 45 ml dry sherry
• 30 ml oyster sauce
• 30 ml dark sesame oil
• 16 gr gingerroot (grated)