In a small bowl, combine the soy sauce, rice vinegar, sesame oil, honey, and mustard.
Mix until these liquid ingredients are well combined.
Add grated ginger and minced garlic to the mixture.
Stir well to ensure the ginger and garlic are evenly distributed throughout the sauce.
Sprinkle in the red pepper flakes and stir to incorporate them fully into the sauce.
This will add a slight kick to your Creamy Ginger Soy Sauce.
Add chopped green onions and sesame seeds to the bowl.
Stir gently to mix them into the sauce without over-mixing.
Refrigerate the sauce for at least 30 minutes before serving.
This chill time allows the flavors to meld for the best-tasting sauce.