pork belly, diced • onion, finely chopped • garlic, minced • chili peppers (such as jalapeños or Thai bird's eye chilies), finely chopped • calamansi juice (or lime juice) • soy sauce • mayonnaise • Salt and pepper to taste • Tortillas or taco shells • Toppings: chopped green onions, chopped cilantro, sliced radishes, diced tomatoes, shredded lettuce, and extra calamansi or lime wedges