Teriyaki is only one flavor in Japan but it's become very popular in America, and we believe you'll like this recipe. The mirin is an essential ingredient that brings out flavor and creates the shine of the sauce.
Mix Sake, soy sauce, Mirin, sugar, and garlic in a bowl. Sprinkle pepper on chicken, and marinate the chicken in the mixture for at least 30 minutes in the fridge. Heat a pan and pour in 1 tablespoon of vegetable oil. Place the chicken in the pan and fry them on med-low heat. Turn the chicken over to fry both sides. Add in the sauce that the chicken was marinated in. Simmer on low heat until the sauce becomes thick. Cut the chicken in strips, put on a plate with rice, and pour sauce in the pan over the chicken and serve.