Teriyaki minced chicken, torisoboro, is one of the most popular lunch box, bento, recipe in Japan, I think. In this recipe, I used not minced chicken, but a defrosted tofu. When you freeze tofu, taste of tofu enhances and its texture turns more chewy. You can find a lot of different teriyaki sauce recipes. In this recipe, I prepared one of the basic Japanese teriyaki sauce using mirin and sake. I know it is not always easy to find esp. mirin outside Japan, so it’s ok if you use substitutes for the teriyaki sauce, such as soy sauce with honey, or soy sauce with coke.