1: For the special sauce, mix mayo, ketchup, worcestershire sauce, sweet pickled relish, dwv, and diced chives. Refrigerate at least an hour before using.
2: Form burger patties using 1/4 pound of ground beef.
3: On a flat cooktop or cast iron skillet, add two burger patties and heat white onions on the side.
4: Smash the burgers using the back of a spatula or burger press, and season with salt, pepper, and yellow mustard.
5: Flip the burgers and top with cheese.
6: Add white onions on top of one burger patty and place the other patty on top of the onions.
7: Assemble the burger with a bun, sauce, seasoned tomato, and patties with onions, plus chopped chiles if desired.