Bok Choy With White Pork

• 1 bok choy stalks
• 65 gr pork shoulder (boneless)
• 45 ml peanut oil
• 60 ml chicken stock
• 4 gr msg
• 5 ml dry sherry
• 2 gr ginger (minced fresh)
• 2 gr sugar
• 1 gr garlic (minced)
• 1 gr salt