How can I make Cantonese barbecue pork that tastes like the restaurant?

How can I make Cantonese barbecue pork with the same flavor as in a restaurant?

The ingredients are as follows: pork (pork/tenderloin) 600g honey 40g green onions, ginger, garlic marinade BBQ sauce 50ml oyster sauce 15ml sugar 2g pepper 2g salt 1

1: green onions, ginger and garlic washed, garlic peeled with a knife and smashed, ginger sliced, green onions cut into strips.

2 ：Make the marinade, put 50ml barbecue sauce, 15ml oyster sauce, 2g sugar, 2g pepper, 1g salt into a bowl and mix well.

3 : Wash the pork and put it on a plate, pour in the green onions, ginger and garlic.

4 : Pour in the marinade sauce made in step 3 and spread evenly.

5 : Seal with plastic wrap and refrigerate for 24 hours, turning once in the middle to taste more evenly.

6 : Line a baking sheet with tinfoil, remove the meat from the marinade, brush both sides evenly with the remaining marinade, and then brush with a layer of honey.

7 : preheat oven 180 °, medium bake 60 minutes, (time can be adjusted according to the size of the meat)

8 : baking process, baking times 15 minutes to turn over a layer of the remaining marinade and brush the honey, and then bake 2 times 10 minutes to turn over the side of the remaining evenly brushed with the remaining marinade and honey, and finally bake 2 times 5-8 minutes to turn over the side of the brush with honey only, with a toothpick poke a bit of meat, can be no effort! A poke in the end is a win, not cooked, then bake a little longer.

9 : from the oven out, the last slices can be served on a plate. Finally, you can add 5ml BBQ sauce to the remaining marinade,

10ml of water to dilute the sauce, and then boil it in a pot to pour it on the BBQ pork, for a better flavor!