In a mixing bowl, combine the soy sauce, water, brown sugar, garlic, ginger, Mirin honey, and sesame oil. Stir until the sugar has dissolved.
120 ml soy sauce, 120 ml water, 100 g brown sugar, 3 cloves garlic, minced, 1 tbsp fresh ginger, grated, 2 tbsp honey, 1 tbsp sesame oil, 2 tbsp Mirin