Mix together Soy Sauce, Worcestershire Sauce, Apple Cider Vinegar, BBQ sauce (I use a homemade sauce but a commercial sauce will work) and marinade Steak for 30 minutes. Grill the steak to medium, do not discard the marinade. Saute the Peppers and Onions with a bit of olive oil. Then add 2 tablespoon of marinade back into the Onions and Peppers and reduce the sauce down by cooking for a few additional minutes. Thinly slice the steak and add to the peppers and onions. Then toast a hamburger bun in a normal toaster and add the steak, pepper and onions on top. Top with cheese if you like a quickly broil the cheese to melt.