Gather all ingredients on your counter before starting.
Measure soy sauce carefully and pour into a bowl.
Add rice vinegar slowly to the soy sauce.
Incorporate sugar and stir until completely dissolved.
Taste the base mixture and adjust if necessary.
Grate fresh ginger and mince garlic.
Stir minced ginger and garlic into the sauce base.
Incorporate sesame oil and whisk until combined.
Add chili oil gradually and taste for heat.
Prepare scallions and add the white parts to the sauce.
Taste and make final adjustments to the sauce.
Fold in the green parts of the scallions before serving.
Let the sauce sit at room temperature for 5-10 minutes before serving.