Char siu or yakibuta - Chinese style roast pork

Ingredients

• char siu
• roast pork
• 2 pounds pork shoulder or neck
• 1 cup soy sauce
• 3 tablespoons oyster sauce
• 5 tablespoons sugar
• 1/2 cup Shaoxing wine 紹興酒）or sake or dry sherry
• 2 centimeters fresh ginger piece of, peeled and sliced
• 1 onion small, peeled and cut into quarters
• 2 garlic cloves peeled and crushed with a knife
• 1 cinnamon stick
• 1 piece star anise
• 1 clove