In this tutorial, we learn how to make London broil with Chef John. If your meat is frozen, slowly defrost it in the fridge for two days. After it's thawed, cut the meat in half so you have two thick pieces. Next, find the half that has fat on each side, and cut off the part with fat. Now, add balsamic vinegar, black pepper, olive oil, and dried Italian herbs into a pan and marinade your meat in it on both sides. Now preheat your oven on high broil and place your meat on a rack with foil underneath it. Add salt and pepper to both sides of the meat and cook 8" from the heat for 6-7 minutes per side. When finished, check to make sure it's cooked to your liking and enjoy for a great dinner.