When Raul Ortega started his taco truck in Boyle Heights in 2001, he probably had no idea just how hard the city would fall for him. Today his Jalisco-inspired tacos have become a rite of passage, and he now runs several trucks around town, not to mention this modest but cherished spot in Pomona. The menu is the same everywhere, limited to tostadas piled with various lime-kissed ceviche and the signature fried shrimp taco tinged with spicy salsa and avocado. It's an unequaled version, complete with a crunchy shell that collapses like tempura, as well as a rich and savory filling. First-time customers start with a single order, while regulars get right to business with a whole plate of them.