Sticky AND Crispy Asian Chicken Wings

Name: Sticky AND Crispy Asian Chicken Wings
Prep time: 10 min
Cook time: 1 h 30 min
Total time: 1 h 40 min
Cuisine: Asian
Ingredients: 1.5 kg chicken wings; 2 level tbsp aluminium-free baking powder ((It has to be baking powder, NOT baking soda) - see further notes on baking powder below); ¾ tsp salt ((make sure it's regular table salt)); ½ tsp pepper; 3 tbsp chopped spring onions/scallions; 1 tsp vegetable oil; pinch of salt and pepper; 1 thumb-sized piece of ginger (peeled and minced); 1 tbsp sweet chilli sauce; 2 tbsp honey; 4 tbsp brown sugar; 5 tbsp dark soy sauce; 1 tsp lemon grass paste; 2 cloves garlic (peeled and minced)