Sweet and spicy pork

Name: Sweet and spicy pork
Prep time: 30 min
Cook time: 4 h 30 min
Total time: 5 h
Cuisine: Asian, Chinese
Ingredients: Pork shoulder; 1 onion; 3 tbsp gochujang; 1 tbsp sesame oil; 4 tbsp ketchup; 6 tbsp soy sauce; 100 ml chicken stock; 1 tbsp hoisin sauce; 2 tbsp honey; 5 garlic cloves; 1 tbsp ground ginger; 2 tbsp rice wine; 1 tbsp cornflour