In a small saucepan over medium heat, combine soy sauce, brown sugar, ginger, garlic, honey, sesame oil, and mirin.

Stir until the sugar dissolves and the mixture begins to simmer.

Mix the cornstarch with water to make a slurry and slowly pour it into the simmering sauce while stirring constantly.

Let cook for a few more minutes until thickened to your desired consistency.

Remove from heat and cool slightly before using.