You’ll spot the festive lights from across the intersection. They drape this cult-favorite pop-up taco stand, which appears in a vacant parking lot on the corner of Watt and Whitney avenues from 5 p.m. to midnight Tuesdays through Sundays. A commercial-sized griddle sizzles with hand-pressed corn tortillas next to a glistening, succulent spit of pork al pastor, stained orange-red from achiote, rich with cumin and pepper. The meat is sliced off and tucked into a taco topped with chopped onion and cilantro and a daub of roasted pineapple, and tastes best devoured on the spot at a folding plastic picnic table or in your car. One bite will make you an instant member of this late-night culinary cult.