Gato Negro

I believe you are referring to a dish called "huevos rancheros" that is sometimes informally called "gato negro" in some restaurants, particularly in the southwestern United States. "Huevos rancheros" is a traditional Mexican dish that consists of fried eggs served on corn or flour tortillas, topped with a spicy tomato sauce, and often accompanied by refried beans, cheese, and other garnishes.

The name "gato negro" (which means "black cat" in Spanish) is not a standard term for huevos rancheros, and its use may vary from one restaurant to another. Some speculate that it refers to the black beans or the color of the sauce, while others believe it is simply a playful or quirky way of naming the dish. In any case, if you come across "gato negro" on a menu, it is likely a variation of huevos rancheros.