The Double-Decker Animal Style is a delicious and indulgent burger from In-N-Out Burger. It features two beef patties cooked to perfection, topped with melted cheese, grilled onions, and a special sauce. The burger is served on a toasted bun and is known for its unique flavor and texture. This recipe is a homemade version of the iconic In-N-Out burger, allowing you to enjoy this mouthwatering treat in the comfort of your own home.