Cut the cabbage and tear into equal parts. Boil water with 1/2 tsp salt and 1 tsp cooking oil.
Blanch the cabbage for 2 minutes, then transfer to cold water. Once cool, drain and set aside.
In a clean pan, heat 3 tsp of neutral cooking oil until hot.
In a small bowl, add minced garlic, chili powder (optional), sesame seeds, and green onions. Pour the hot oil over the mixture.
Add the light soy sauce, black vinegar, oyster sauce, and sugar into the bowl. Stir until combined.
In a larger bowl, toss the blanched cabbage and shredded carrot.
Pour the sauce over the cabbage and carrot, and mix until well coated. Serve and enjoy!