Ensure all ingredients are completely dry to prevent splattering during cooking.
In a large cast-iron skillet or pan, heat oil over medium heat.
Add garlic cloves and brown them evenly on all sides until golden, stirring occasionally. Simultaneously, lightly toast the chiles de arbol in the same pan, stirring constantly until fragrant (about 20 seconds). Remove both the garlic and chiles as soon as they’re ready and set aside.
Add jalapeños to the skillet and fry, flipping as needed, until they blister, soften, and char on all sides. Remove and set aside with the garlic and chiles.
Place spring onions in the skillet and cook until browned and slightly tender, leaving some bite (or cook longer if preferred). Remove and combine with the other cooked ingredients.
Stir in lime juice and salt, tossing everything together to coat evenly.