This recipe for Spicy Eggs in Hell is basically a riff on eggs in purgatory, a Southern Italian staple. Subtle variations are made around the world. Shakshuka, a Middle Eastern version, incorporates chopped peppers and loads of spices like harissa, cumin, and lemon. Huevos rancheros, from Mexico, uses salsa in place of the tomato sauce and is loaded with cilantro, avocado, refried beans, and warm tortillas.