What is the name of the steak that's specifically marinated for 18 hours?

The steak that is marinated for 18 hours is the Outback Sirloin. This specific marinade process enhances the flavor and tenderness of the steak, which is a hallmark of Outback Steakhouse's commitment to providing a flavorful dining experience.

Marination is crucial in preparing steaks, as it allows the meat to absorb the marinade's flavors, making it juicier and more palatable. The Outback Sirloin, known for its lean quality and satisfying taste, is particularly highlighted in the menu for its special care during preparation.

While the other steak options are indeed popular choices at Outback Steakhouse, they either do not undergo the 18-hour marination process or are associated with different culinary characteristics. This distinction makes the marinated Outback Sirloin unique in terms of flavor and appeal among steak lovers at the restaurant.