Shanghai oil gluten stuffed pork

Ingredients

• 8-10 fried wheat gluten puffs (you mian jin)
• 200 g minced pork
• 50 g water chestnuts (finely chopped)
• 1 tbsp light soy sauce
• 1 tbsp Shaoxing wine
• 1/2 tsp sesame oil
• 1/2 tsp white pepper
• 1 tsp cornstarch
• 400 ml chicken stock
• 1 tbsp light soy sauce
• 1 tsp sugar
• Bok choy
• Scallions