Chinese Broccoli (Gai Lan) with Oyster Sauce

INGREDIENTS

• 1 pound of Chinese broccoli (Gai Lan)
• 1 1/2 tablespoons cooking oil
• 5 whole garlic cloves, peeled and gently smashed but left intact
• 1/4 cup vegetable stock
• 1 tablespoon Chinese rice wine (or dry sherry)
• 1/4 teaspoon sugar
• 1 inch of fresh ginger, cut into 1/8" coins and smashed with side of cleaver
• 3 tablespoons oyster sauce
• 1/2 teaspoon sesame oil