This authentic Chinese dumpling dipping sauce comes together in just 5 minutes with garlic, cilantro, soy sauce (or coconut aminos), Chinese black vinegar, and optional crispy chili oil. The flavors get even better as it sits, making it the perfect make-ahead sauce for dumplings, potstickers, wontons, and more.
Serve immediately, or let the sauce rest for at least 30 minutes. For the best flavor, refrigerate overnight so the garlic and cilantro can infuse the sauce.