Add all burger ingredients to a large mixing bowl. Mix with hands until ingredients are incorporated well. Do not over mix. When done, cover and refrigerate until chilled. Or overnight.

When ready to cook, add onion, mushrooms, and bacon to a large saute pan. Add a touch of oil and saute until all are cooked and onions are starting to caramelize. Add garlic, wine and vinegar. Turn up heat to medium high. Saute until all liquid evaporates. Remove from heat.

Make the patties, I split entire mix into 6... making 1/3 lb patties. Cook burgers however you prefer. Grill, pan fry, however you like it. Season both sides of burgers with the same seasoning you mixed in. The last couple minutes, add toppings over burger and add cheese on top. Let it melt.

Dress your buns and add crispy chips if desired. Serve with desired side dish. Enjoy.