Gather all your ingredients on the counter to ensure a smooth process.
In a mixing bowl, combine the water, low-sodium soy sauce, honey or brown sugar, rice vinegar, toasted sesame oil, grated garlic, and grated ginger.
Using a whisk or fork, mix the ingredients thoroughly until the honey or brown sugar is fully dissolved.
In a small bowl, mix the cornstarch with a few tablespoons of cold water to create a slurry.
Pour the mixed sauce into a small saucepan and bring it to a gentle simmer over medium heat.
Slowly add the cornstarch slurry while whisking continuously and cook for 1-2 minutes until thickened.
Taste the sauce and adjust flavors as needed with more sweetener, vinegar, or red pepper flakes.
Remove from heat, allow to cool, and then transfer to a storage container.
