Pour the oil into a large skillet to a depth of about 1 inch. Heat over high heat until very hot but not quite smoking (a tortilla strip dropped into the oil should sizzle). Fry the tortilla strips about 30 seconds, working in batches if necessary so the oil temperature doesn’t drop. Lift from the pan and drain on paper towels.
In another large skillet, heat the 3 tablespoons oil over h