01 -
When handling raw meat, use metal mixing bowls and a plastic cutting board. Do not use wooden cutting boards for raw proteins.
02 -
In a mixing bowl, combine ground beef, Worcestershire sauce, egg, salt, and black pepper. Mix briskly until well incorporated.
03 -
Form beef mixture into 4 equal 1/2-pound patties or 6 equal 1/3-pound patties. Place patties on a parchment-lined tray, season both sides with additional salt and pepper. Cover tray tightly with plastic wrap. Refrigerate for 2 to 4 hours.
04 -
Heat a pan over medium to medium-low heat. Add oil and butter, then add sliced onion. Sauté onions until golden brown. Sprinkle flour over onions and stir to coat. Gradually pour in whiskey while stirring, allowing sauce to gently simmer. Pour in beef stock and mix well. Add Worcestershire sauce, tomato paste, salt, pepper, and bay leaf. Simmer for several minutes over medium-low heat, then remove from heat.
05 -
In a pan over medium to medium-low heat, add oil and butter. When butter is melted, add sliced mushrooms. Season with salt and pepper. Sauté until mushrooms are deep golden brown. Remove from heat and set aside.
06 -
Create a shallow well in the center of each chilled patty using your fingers. This aids in even cooking.
07 -
Heat a pan over medium heat and add a small amount of oil. Once hot, add patties and cook for 5 to 8 minutes per side, depending on preferred doneness. Do not press or disturb burgers during cooking. After flipping, pour 2 tablespoons of whiskey into the pan and continue cooking.
08 -
Remove patties from pan as soon as done. Rest them on a plate, tent loosely with foil, and let stand for 5 minutes.
09 -
Place burger patties in buns. Top with sautéed mushrooms, crispy bacon, and a generous spoonful of whiskey sauce. Serve immediately.