The Animal Style burger includes a mustard-seared beef patty, lettuce, tomato, American cheese, pickles, grilled onions, and a signature mix of mayo, ketchup, vinegar, and relish.
You can get an Animal Style burger at McDonald's by ordering a double cheeseburger and requesting to add tomatoes and lettuce but leave off the ketchup.
Next, as per TikTok user HellthyJunkFood, ask for Big Mac sauce on the side — it's another fast food version of the tangy secret sauce made with mayo, mustard, relish, and vinegar.
A word of caution: Not every McDonald's will fulfill off-menu requests, and these special items are often harder to customize when ordering online or through delivery apps.