Pour in Coca-Cola: Carefully pour in 1 cup of Coca-Cola, followed by 1/4 cup of soy sauce.
Add Spices: Toss in the 2 star anise, sprinkle in the 1/2 teaspoon of chili flakes (or Thai chili pepper), and add the 4 tablespoons of white vinegar.
Bring to a Boil: Allow the mixture to come to a boil before stirring to combine all the ingredients.
Simmer and Thicken the Sauce:
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