In a bowl, combine the soy sauce, honey, rice vinegar, sesame oil, brown sugar, garlic, and ginger. Stir well until the brown sugar is fully dissolved.
Place your protein, tofu, or vegetables in a non-metal container. Pour the marinade over and let sit in the refrigerator for at least 30 minutes to enhance flavor.
Optional: If you prefer a thicker sauce for glazing, pour any leftover marinade into a small saucepan. In a separate cup, whisk together the water and cornstarch to create a slurry.