Chinese pork potsticker dumplings

INGREDIENTS

• 140g/5oz plain flour
• 125ml/4fl oz very hot water
• 110g/4oz minced pork
• 75g/3oz Chinese leaves or spinach
• 1 tsp finely chopped ginger
• ½ tbsp Shaoxing rice winedry sherry
• ½ tbsp dark soy sauce
• ½ tsp light soy sauce
• ½ tsp salt
• ¼tsp freshly ground black pepper
• 1½ tbsp finely chopped spring onions
• 1 tsp sesame oil
• ½ tsp sugar
• 1 tbsp cold chicken stock
• about 1 tbsp groundnut oil
• 75ml/3fl oz water
• 3 tbsp soy sauce
• 1 tbsp white rice vinegar
• 2 tsp chilli oil