Make Ahead Tip: Marinate the steak in the refrigerator for up to 1 day.
Mirin is a sweet, low-alcohol rice wine essential in Japanese cooking. Look for it in your supermarket with the Asian or gourmet ingredients. It will keep for several months in the refrigerator. An equal portion of sherry or white wine with a pinch of sugar can be used as a substitute.
People with celiac disease or gluten-sensitivity should use soy sauces that are labeled "gluten-free," as soy sauce may contain wheat or other gluten-containing sweeteners and flavors.
4 lean meat, 1/2 fat