Chicken Pies

Name: Chicken Pies
Yield: Makes 12
Cuisine: China
Ingredients: 2 tbsp groundnut or peanut oil; 2 tbsp groundnut or peanut oil; 250 ml chicken stock; 1 tbsp plain flour; 1 medium chicken, roasted or poached; 1 medium chicken, roasted or poached; 4 shallots, or 1 small onion; 4 shallots, or 1 small onion; 1 egg yolk, beaten with 1 tbsp milk; 500 g packet puff pastry; 1 egg yolk, beaten with 1 tbsp milk; 1 tbsp oyster sauce; 1 tbsp soy sauce; 2 tbsp finely chopped coriander; 1 tbsp hoi sin or plum sauce; 6 dried shiitake mushrooms; 1 medium chicken, roasted or poached