Brokoli Cina ala Restoran dengan Saus Tiram

Bahan-bahan (2 porsi)

• 1 bunch Chinese broccoli (("Gai Lan") (Note 1))
• 1 tsp corn flour / corn starch
• 6 tbsp water
• 1 tbsp oyster sauce
• 1/2 tsp dark soy sauce
• 1 tbsp Chinese cooking wine ((sub Mirin or Dry Sheer, Note 1))
• 1/2 tsp sesame oil
• 1/2 tbsp vegetable oil ((or canola or peanut))
• 1/2 tsp sugar
• 1 clove garlic (, finely grated)
• 1 tsp ginger (, finely grated)