In a mixing bowl, combine the soy sauce, rice vinegar, chili oil, sesame oil, and sugar.
Add the minced garlic, grated ginger, chopped green onion, and salt.
Stir well to ensure all the ingredients are fully incorporated.
Cover the bowl and let the spicy sauce sit at room temperature for 15 minutes to allow the flavors to meld together.
Taste and adjust the seasoning according to your personal preference. Add more chili oil for extra heat or more sugar for a touch of sweetness.
Transfer the spicy sauce to a jar or bottle with a tight-fitting lid and refrigerate for at least 1 hour to allow the flavors to deepen.
Before serving, give the jar or bottle a good shake to ensure all the ingredients are well combined.
Drizzle the Din Tai Fung’s spicy sauce over your favorite dishes, such as dumplings, noodles, or rice, and enjoy the irresistible combination of heat and flavor!