Everyone loves a good secret, especially when it comes to hidden menu items that can amplify your fast-food dining experience. Burger King, the global fast-food giant known for its whoppers and flame-grilled burgers, is no stranger to the secret menu phenomenon. Food enthusiasts and BK aficionados have uncovered some of the most delectable items that aren’t listed on the official menu but can be ordered if you know what to ask for. Here are five of the best Burger King secret menu items.

1. The Suicide Burger – Not for the faint of heart, the Suicide Burger is also sometimes known as the Quad Stacker. This behemoth is stacked with four beef patties, four slices of cheese, bacon, and special sauce, all crammed between two sesame seed buns. It’s a calorie bomb that’s sure to satisfy any fierce appetite.

2. Frings – Can’t decide between fries or onion rings? No problem! Frings combine the best of both worlds by offering you a half-serving of fries and a half-serving of onion rings in one order. It’s the perfect choice for those who want a little bit of everything.

3. BK Ham and Cheese – Taking inspiration from classic diner fare, this off-menu item takes an original flame-grilled hamburger and adds slices of ham along with melted cheese. It’s a simple twist on your regular burger but adds a whole new flavor profile that many don’t expect from Burger King.

4. Mustard Whopper – The Mustard Whopper tweaks the traditional Whopper by swapping out mayonnaise for mustard and is apparently popular in some regions outside the United States. For those looking for a tangy twist on their burger, just ask to replace the mayo with mustard when placing your order.

5. Veggie Whopper – While Burger King has introduced plant-based options in recent years, some vegetarians have been DIY-ing it for much longer by ordering a Whopper with all the fixings but omitting the beef patty. Some locations will also let you substitute a veggie patty if they have them available.

It’s worth noting that not all Burger King locations may be familiar with these items by name or willing to offer them due to varying policies or ingredient availability. To ensure a smooth ordering process, it’s best to describe exactly how you’d like your secret item prepared when you get to the counter or drive-through window.

Dive into these secret delights on your next visit to Burger King and enjoy these unadvertised treasures that could make your fast-food run even more exciting!