Creating Beef Teriyaki at home can be straightforward if you follow these simple steps:

1. Prepare the Marinade: In a small bowl, whisk together the soy sauce, brown sugar, rice vinegar, mirin, sesame oil, ginger, and garlic.
2. Marinate the Beef: Place the sliced beef in a resealable bag or bowl. Pour the marinade over the beef, ensuring all pieces are coated. Marinate in the refrigerator for at least 15 minutes, or up to 1 hour for more flavor.
3. Cook the Beef: Heat a large skillet or wok over medium-high heat. Add a little oil (if necessary) and then add the marinated beef in a single layer. Cook until browned, about 3-4 minutes per side. Do not overcrowd the pan; cook in batches if needed.
4. Thicken the Sauce: Once the beef is cooked, pour any remaining marinade into the skillet. Bring it to a gentle boil and let it simmer for 2-3 minutes until it thickens slightly.
5. Serve: Remove the skillet from heat. Serve the Beef Teriyaki over cooked rice or noodles. Garnish with chopped green onions and sesame seeds for added flavor and appeal.

These steps will guide you in creating this incredible Beef Teriyaki dish effortlessly, ensuring a delightful experience for everyone at your table.