Steps

• 1

  When ready to cook, set the Traeger temperature to 400 °F and preheat with the lid closed for 15 minutes.

  400 ˚F / 204 ˚C

• 2

  In a medium bowl, add the boar and venison. Combine, being careful to not overwork the meat. Form the meat mixture into four 1/3 lb patties. Season both sides of the burgers generously with salt and black pepper.

• 3

  Make the special sauce. In a small bowl, combine the mayonnaise, ketchup, relish, sugar, and vinegar. Stir well and set aside.

• 4

  Insert the probe horizontally into the center of a burger patty. Place the patties directly on the grill grates. Close the lid and cook, flipping once, until the internal temperature reaches 160°F, or cook to your desired doneness.

  400 ˚F / 204 ˚C

  160 ˚F / 71 ˚C

• 5

  Place the sliced onion directly on the grill grates. Close the lid and cook for 5 minutes. During the last minute of cooking, place the cheese on the burgers, and the buns cut-side-down on the grill grates to toast, if desired.

  00:05

• 6

  Remove the burgers, onions, and buns from the grill. Build the burgers. Spread the special sauce on the buns, add a burger patty, tomato, lettuce, and grilled onions, as desired. Enjoy!