Baked chicken in mandarin orange sauce

Every Chinese New year, I will end up with mandarin oranges and nobody eats them except me. To reduce wastage, I would try to add them in my cooking. This year I tried something new with chicken wings and my boy loves it. Sorry I am unable to provide very accurate measurements because I estimated while I was cooking.

Ingredients
7 chicken wings
1 tsp white sesame (garnish)
Shredded lettuce (garnish)

Marinate
Salt
White pepper
Cornstarch
Baking powder
Oil (I used extra light olive oil)

Sauce
2 Mandarin oranges (juiced)
1 Tbsp oyster sauce
garlic powder
1 tsp vinegar
sugar

Recipe
1. Marinate the chicken wings with the ingredients stated above. For the baking powder, I only added slightly less than half a tsp. Added some oil so that it is easier to coat the wings. Leave it for at least 30 minutes.
2. Arrange the wings neatly on the baking tray and make sure no overlapping so that they can get baked evenly for 180 degree 25 to 30 minutes. Depending on your oven, you can stop baking when you see the wings turn golden brown. See the picture above.
3. For the sauce, you can juice 2 mandarin oranges which yield about 1 small bowl for myself. Add oyster sauce, garlic powder, vinegar and a little sugar. Heat up the sauce mixture in the wok till it is boiling. Adjust the taste to your liking. i.e. if your oranges are not sweet, you need to add a little more sugar to balance the sweet sour taste.
4. Once you are happy with the sauce, add in the white sesame. Give it a good stir before adding in the baked wings. Coat the wings with the sauce then remove from wok. Serve the wings on a bed of shredded lettuce.

Note: if you do not like the sauce, you can always make the marinate more flavourful by adding in spices before baking them.