Keep this food news hush-hush.

Come in close. Closer. You may have heard of a few burgers being served surreptitiously, burgers you won't find on any menu. We sent in our special ops team to get the full report: 

Name: Loaded Burger
Location: M Café
Details: The restaurant's Big Macro, plus smoky tempeh bacon and sliced avocado

Name: El Dorado Burger
Location: The Veggie Grill 
Details: The traditional veggie cheeseburger topped with caramelized onions and spicy jalapeños

Name: Burger X (So secret, it doesn't have a name yet)
Location: Napa Valley Grille 
Details: A hormone- and antibiotic-free Angus beef patty topped with nutty Mountaineer cheese, grilled Cabernet onions, mushrooms, house-made pickles and more

Mystery meat takes on a whole new meaning.

Know someone who can keep a secret? Send her this story.